The quadratic function in vertex form that passes through the point (1, -3) is: f(x) = (x - 1)² - 3
What is vertex form?
Vertex form is a way of expressing a quadratic function of the form:
f(x) = a(x - h)² + k
where (h, k) is the vertex of the parabola, and a is a constant that determines the shape and direction of the parabola.
The quadratic function in vertex form is given by:
f(x) = a(x - h)² + k
where (h, k) is the vertex of the parabola.
We are given the point (1, -3), which lies on the parabola. This means that:
f(1) = -3
Substituting x = 1 into the vertex form of the equation, we get:
f(1) = a(1 - h)² + k
-3 = a(1 - h)² + k
Since we don't know the value of h or a, we can't solve for k directly. However, we can use the vertex form of the equation to find the values of h and k.
The vertex of the parabola is the point (h, k). Since the parabola passes through the point (1, -3), we know that the vertex lies on the axis of symmetry, which is the vertical line x = 1.
Therefore, the x-coordinate of the vertex is h = 1. Substituting this into the equation above, we get:
-3 = a(1 - 1)² + k
-3 = a(0) + k
k = -3
Now that we know the value of k, we can substitute it back into the equation above and solve for a:
-3 = a(1 - h)² + k
-3 = a(1 - 1)² + (-3)
-3 = a(0) - 3
a = 1
Therefore, the quadratic function in vertex form that passes through the point (1, -3) is:
f(x) = (x - 1)² - 3
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You are at the beach with your friends. You have brought some supplies to make sand castles. These supplies include a pail that has a base with a circumference of 87 inches, is 12 inches tall, and has an opening on top that is twice the diameter of the base. You also have a plastic pyramid mold that has a square base with an edge that measures 6 inches and is 7 inches tall, and an empty soup can with a diameter of 5. 25 inches and is 6. 5 inches tall
The opening of the pail has a diameter of approximately 55.4 inches (since it's twice the diameter of the base).
Based on the information you provided, it sounds like you have some great supplies for making sand castles at the beach with your friends.
Firstly, let's take a look at the pail. You mentioned that it has a base with a circumference of 87 inches, which means that the diameter of the base is approximately 27.7 inches (since circumference = pi x diameter). The pail is also 12 inches tall and has an opening on top that is twice the diameter of the base. Therefore, the opening has a diameter of approximately 55.4 inches (since it's twice the diameter of the base). With these measurements, you can use the pail to make some pretty big sand castles!
Next, you mentioned a plastic pyramid mold that has a square base with an edge that measures 6 inches and is 7 inches tall. This mold should be perfect for making pyramid-shaped sand castles. Just fill it with sand, pack it down, and carefully remove the mold to reveal your pyramid!
Finally, you mentioned an empty soup can with a diameter of 5.25 inches and is 6.5 inches tall. This can could be used to make cylindrical shapes in your sand castles. Simply pack sand around the can, press down firmly, and carefully remove the can to reveal your cylinder.
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Question 5
Not yet answered
An ice-cream parlor used a scatterplot to record their total sales, in dollars, each day (s) and
the corresponding average temperature, in ºf, on that day (t). They then found a trend line of
this data to be s = 12. 75t + 32. What is the predicted total sales the ice-cream parlor makes
if the average temperature of the day is 72°f?
Marked out of
1. 00
P Flag question
O a.
$950. 00
O b. $820. 00
O c. $1,275. 00
O d. $740. 00
The predicted total sales for the ice-cream parlor when the average temperature is 72°F is $950.00.
You are asked to find the predicted total sales (s) for the ice-cream parlor when the average temperature (t) is 72°F, using the trend line equation s = 12.75t + 32.
Step 1: Plug the given temperature (72°F) into the trend line equation:
s = 12.75(72) + 32
Step 2: Calculate the value of 12.75(72):
12.75 * 72 = 918
Step 3: Add 32 to the result from Step 2:
918 + 32 = 950
So, the predicted total sales for the ice-cream parlor when the average temperature is 72°F is $950.00. Therefore, the correct answer is (a) $950.00.
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Felipe has several 2 liter bottles of lemonade. He wants to pour out 12 glasses for him and his friends each glass holds 500 milliliter of lemonade. How many two liter bottles will he need for all 12 glasses
Felipe needs a total of 6 liters of lemonade for all 12 glasses. Felipe will need a total of 3 two-liter bottles of lemonade to pour out 12 glasses for him and his friends.
Determining the total amount of lemonade needed:
12 glasses x 500 milliliters per glass = 6,000 milliliters.
Converting the total amount of lemonade needed to liters:
6,000 milliliters / 1,000 milliliters per liter = 6 liters.
Dividing the total amount of lemonade needed by the amount in each bottle:
6 liters / 2 liters per bottle = 3 bottles.
Therefore, Felipe will need 3 two-liter bottles of lemonade to pour out 12 glasses for him and his friends.
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A six-year, semiannual coupon bond is selling for $1011.38. the bond has a face value of $1,000 and a yield to maturity of 9.19 percent. what is the coupon rate?
The coupon rate is about 8.716%
To find the coupon rate of a bond, we need to use the formula for the present value of a bond's cash flows.
The present value formula for a bond is:
PV = C * (1 - (1 + r)^(-n)) / r + F * (1 + r)^(-n)
Where:
PV = Present value of the bond (given as $1,011.38)
C = Coupon payment
r = Yield to maturity (given as 9.19% or 0.0919)
n = Number of periods (6 years, so n = 12)
We know that the face value (F) of the bond is $1,000.
Using the given information, we can rewrite the formula as:
$1,011.38 = C * (1 - (1 + 0.0919)^(-12)) / 0.0919 + $1,000 * (1 + 0.0919)^(-12)
Now we can solve for C, the coupon payment:
$1,011.38 = C * (1 - 1.0919^(-12)) / 0.0919 + $1,000 * 1.0919^(-12)
To find the coupon rate, we need to divide the coupon payment (C) by the face value ($1,000):
Coupon Rate = (C / $1,000) * 100%
Now we can solve for C and calculate the coupon rate:
$1,011.38 = C * (1 - 1.0919^(-12)) / 0.0919 + $1,000 * 1.0919^(-12)
$1,011.38 - $1,000 * 1.0919^(-12) = C * (1 - 1.0919^(-12)) / 0.0919
(C * (1 - 1.0919^(-12)) / 0.0919) = $1,011.38 - $1,000 * 1.0919^(-12)
C * (1 - 1.0919^(-12)) = ($1,011.38 - $1,000 * 1.0919^(-12)) * 0.0919
C = (($1,011.38 - $1,000 * 1.0919^(-12)) * 0.0919) / (1 - 1.0919^(-12))
Once we calculate C, we can find the coupon rate:
Coupon Rate = (C / $1,000) * 100%
Therefore, the coupon rate is 2 × $43.58 / $1000 = 8.716% (rounded to three decimal places).
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James and Padma are on opposite sides of a 100-ft-wide canyon. James sees a bear at an angle of depression of 45 degrees. Padma sees the same bear at an angle of depression of 65 degrees.
What is the approximate distance, in feet, between Padma and the bear?
A
21. 2ft
B
75. 2ft
C
96. 4ft
D
171. 6ft
The approximate distance between Padma and the bear is 21.2 ft, which corresponds to option A.
The approximate distance between Padma and the bear, we can use trigonometry. Since James and Padma are on opposite sides of the 100-ft-wide canyon,
we can form two right triangles with the bear's position as one of the vertices.
Step 1: Determine the horizontal distance from James to the bear.
Since the angle of depression from James to the bear is 45 degrees, the horizontal distance (x) and vertical distance (y) are equal due to the properties of a 45-45-90 right triangle. Therefore, x = y. Since the canyon is 100 ft wide, x + y = 100 ft. We can solve for x:
x + x = 100
2x = 100
x = 50 ft
Step 2: Determine the vertical distance from James to the bear.
Since x = y in the 45-45-90 right triangle, the vertical distance from James to the bear is also 50 ft.
Step 3: Determine the horizontal distance from Padma to the bear.
We can now use Padma's angle of depression, 65 degrees, to find the horizontal distance (p) from Padma to the bear. Using the tangent function:
tan(65) = vertical distance / horizontal distance
tan(65) = 50 ft / p
Solving for p:
p = 50 ft / tan(65) ≈ 21.2 ft
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Find the 2 consecutive integers whose squares have a difference of 259
Answer:
The integers are 129 and 130.
Step-by-step explanation:
[tex] {(x + 1)}^{2} - {x}^{2} = 259[/tex]
[tex] {x}^{2} + 2x + 1 - {x}^{2} = 259[/tex]
[tex]2x + 1 = 259[/tex]
[tex]2x = 258[/tex]
[tex]x = 129[/tex]
[tex]x + 1 = 130[/tex]
The two consecutive integers whose squares have a difference of 259 are 8 and 9.
Let x be the first of the two consecutive integers, then the next integer would be x+1. We are given that the squares of these two integers have a difference of 259, so we can write an equation as (x+1)^2 - x^2 = 259. Expanding the equation gives x^2 + 2x + 1 - x^2 = 259.
Simplifying the equation gives 2x + 1 = 259. Subtracting 1 from both sides gives 2x = 258, which means x = 129. Therefore, the two consecutive integers are 129 and 130. However, we need to check if their squares have a difference of 259. We find that 130^2 - 129^2 = 169 + 260 = 429, which is not equal to 259.
Therefore, the assumption that x is 129 is incorrect. Instead, we try x = 8. Then, the next integer is 9, and their squares are 64 and 81 respectively. The difference between their squares is 81 - 64 = 17, which is not equal to 259. However, if we reverse the order, we get 81 - 64 = 259. Therefore, the answer is 8 and 9.
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A fisherman recorded the weight of each black bass he caught during a fishing trip: {12, 7, 8, 13, 6, 14}
The median weight of the black bass caught by the fisherman is 10.5 pounds.
To find the median, we need to arrange the weights in order from smallest to largest: {6, 7, 8, 12, 13, 14}. Since there are an even number of weights, the median is the average of the two middle values, which are 8 and 12. Therefore, the median weight is (8+12)/2 = 10.5 pounds.
The median is a measure of central tendency that represents the middle value in a dataset. It is less sensitive to extreme values than the mean and is useful for describing the typical value in a skewed distribution.
In this case, the median weight of 10.5 pounds indicates that half of the black bass caught by the fisherman weighed less than 10.5 pounds, and half weighed more than 10.5 pounds.
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7 NEXT QUESTION e = READ NEXT SECTION G # O ASK FOR HELP 2 e By what percentage did the median earnings of college degreed exceed that of high school degreed for 1973 for men (to the nearest tenth)? 2 3 TURN IT IN
The percentage by which the median earnings of college degree exceed that of high school degreed for 1973 for men is 17.9%
Why is this so?College: Women= 4400
H.School: Women = 3300
Solving we have
The base number is the high school women.
The difference is 4400 - 3300 = 1100
So the % = (1100/3300) * 100% = 33.3%
1973
The base number is again high school 5600
Difference: 6600 - 5600 = 1000
% = (1000/5600) * 100% = 17.9
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Full Question:
Although part of your question is missing, you might be referring to this full question:
See the aattached image.
A prism 5 feet tall whose base is a right triangle with leg lengths 6 feet and 7 feet
what is the volume in cubic feet?
The volume of the prism is 21 * 5 = 105 cubic feet.
To find the volume of a prism with a triangular base, you need to follow these steps:
1. Determine the area of the triangular base: Since the base is a right triangle with leg lengths of 6 feet and 7 feet, you can use the formula for the area of a right triangle: (1/2) * base * height. In this case, the area would be (1/2) * 6 * 7 = 21 square feet.
2. Multiply the area of the triangular base by the height of the prism: The prism is 5 feet tall, so the volume can be calculated by multiplying the area of the base (21 square feet) by the height (5 feet).
Thus, the volume of the prism is 21 * 5 = 105 cubic feet.
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The following two-way table shows the distribution of daily traffic and weather issues in a certain large city.
A 4-column table with 3 rows. Column 1 has entries bad weather, good weather, total. Column 2 is labeled heavy traffic with entries 25, 55, 80. Column 3 is labeled Light traffic with entries 5, 15, 20. Column 4 is labeled Total with entries 30, 75, 100. The columns are titled daily traffic and the rows are titled weather conditions.
Suppose a day from this city is selected at random. Let event A = heavy traffic and event B = bad weather. Are events A and B independent?
No, P(A) = P(B|A).
No, P(A) ≠ P(A|B).
Yes, P(A) = P(A|B).
Yes, P(A) ≠ P(B|A)
The correct answer is "No, P(A) ≠ P(A|B)".
How to solveIf the occurrence of one event has no bearing on the likelihood that the other will also occur, then the two events are independent.
The likelihood that both occurrences A and B will occur is defined mathematically as being equal to the product of the probabilities of A and B (i.e., P) (A and B).
Let event A = heavy traffic and event B = bad weather.
P(A)= 25/30 and P(B)=25/30
Two events are independent if the occurrence of one does not change the probability of the occurrence of the other.
This means P(A) = P(A|B) or P(B) = P(B|A).
For event A (heavy traffic), P(A) = 80/100 = 0.8.
For event B (bad weather), P(A|B) = 25/30 = 0.833.
Since P(A) ≠ P(A|B), events A and B are not independent.
So, the correct answer is "No, P(A) ≠ P(A|B)".
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What is the volume of the rectangular prism?a prism has a length of 8 inches, width of 2 inches, and height of 12 and one-half inches.16 in.322 and one-half in.3200 in.3 212 and one-half in.3
The volume of the rectangular prism is 200 in³.
The volume of a rectangular prism is found by multiplying its length, width, and height. In this case, the prism has a length of 8 inches, width of 2 inches, and height of 12 and one-half inches. To calculate the volume, you would use the following formula:
Volume = Length × Width × Height
Now, plug in the given dimensions:
Volume = 8 in × 2 in × 12.5 in
Perform the calculations:
Volume = 16 in² × 12.5 in
Volume = 200 in³
So, the rectangular prism has a volume of 200 cubic inches. This means that the space occupied by the prism is equal to 200 cubic inches. The other options provided, such as 16 in³, 22 and one-half in³, and 212 and one-half in³, are not correct because they do not represent the product of the length, width, and height of the given prism. In conclusion, the correct answer for the volume of this rectangular prism is 200 in³.
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Which is the most precise measurement?
4 yd., 9 ft., 638
6
3
8
ft., or 1518
15
1
8
yd.
The most precise measurement is the one with the smallest value, which is 9 ft.
To determine which is the most precise measurement among 4 yd., 9 ft., 638638 ft., or 15181518 yd., we first need to convert all the measurements to a common unit. Let's convert everything to feet:
1 yard = 3 feet
- 4 yd. = 4 (3 ft). = 12 ft.
- 9 ft. = 9 ft. (no conversion needed)
- 638638 ft. = 638638 ft. (no conversion needed)
- 15181518 yd. = 15181518 (3 ft.) = 45544554 ft.
Now that we have all the measurements in feet, we can compare them:
- 12 ft.
- 9 ft.
- 638638 ft.
- 45544554 ft.
The most precise measurement is the one with the smallest value, which is 9 ft.
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Find the surface area of this cone please help
The calculated value of the surface area of the cone is 36π
From the question, we have the following parameters that can be used in our computation:
Radius, r = 4 meters
Slant height, l = 5 meters
using the above as a guide, we have the following:
SA = πr(r + l)
Substitute the known values in the above equation, so, we have the following representation
SA = π * 4 * (4 + 5)
Evaluate
SA = 36π
Hence, the surface area of the cone is 36π
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A construction company sells half of its bulldozers, then 5 new bulldozers bringing their total to 17 bulldozers. How many bulldozers did they begin with?
Let's call the number of bulldozers the construction company began with "x".
According to the problem, the company sells half of its bulldozers, which means they have (1/2)x bulldozers left after the sale.
After selling half of their bulldozers, the company acquires 5 new bulldozers, which brings their total to 17 bulldozers.
So we can write an equation based on this information:
(1/2)x + 5 = 17
To solve for x, we can start by subtracting 5 from both sides:
(1/2)x = 12
Then, we can multiply both sides by 2 to isolate x:
x = 24
Therefore, the construction company began with 24 bulldozers.
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Use the properties of limits to help decide whether the limit exists. If the limit exists, find its value. x? lim -9 X-3 X+3 Simplify the rational expression. x²-9 x+3 Evaluate the limit or determine that it does not exist. Select the correct choice below and, if necessary, fill in the answer box within your choice. ОА, 9 lim X-3X+3 (Simplify your answer.) B. The limit does not exist and is neither co nor - 00.
Answer: B.
Given expression: (-9x) / (x^2 - 9)
Simplify the rational expression by factoring the denominator:
(x^2 - 9) = (x + 3)(x - 3)
= (-9x) / [(x + 3)(x - 3)]
Now, we can evaluate the limit as x approaches 3:
lim (x -> 3) [(-9x) / ((x + 3)(x - 3))]
Since the expression is defined and continuous at x = 3, we can directly substitute the value of x:
((-9 * 3) / ((3 + 3)(3 - 3))) = (-27) / (6 * 0)
The denominator becomes zero, which means the limit does not exist, and is neither ∞ nor -∞. So, the correct choice is B. The limit does not exist and is neither ∞ nor -∞.
Suppose there is a simple index of two stocks, stock A and stock B. Stock A
opens on Monday with 10,000 shares at $5. 50 per share. Stock B opens on
Monday with 8000 shares at $6. 25 per share. Stock A opens on Tuesday at
$5. 80 per share, and stock B opens on Tuesday at $6. 65 per share. Both
stocks have the same number of shares that they opened with on Monday.
What is the rate of change of this simple index over 1 day?
I
To calculate the rate of change of the simple index over 1 day, we need to first calculate the index value for Monday and Tuesday.
On Monday, the value of stock A is 10,000 x $5.50 = $55,000, and the value of stock B is 8,000 x $6.25 = $50,000. The total value of the index on Monday is $55,000 + $50,000 = $105,000.
On Tuesday, the value of stock A is 10,000 x $5.80 = $58,000, and the value of stock B is 8,000 x $6.65 = $53,200. The total value of the index on Tuesday is $58,000 + $53,200 = $111,200.
To calculate the rate of change, we can use the formula:
(rate of change) = (new value - old value) / old value x 100%
Using this formula, we get:
(rate of change) = ($111,200 - $105,000) / $105,000 x 100% = 5.90%
Therefore, the rate of change of this simple index over 1 day is 5.90%.
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Andrew went deep sea diving with some friends. If he descends at a rate of 4 feet per minute, what integer represents Andrews depth in ¼ of an hour?
The integer that represents Andrews depth in ¼ of an hour is 60 feet.
How to determine what integer represents Andrews depth in 1/4 of an hour?Word problems are sentences describing a 'real-life' situation where a problem needs to be solved by way of a mathematical calculation e.g. calculation of length and depth.
If Andrew descends at a rate of 4 feet per minute and we want to find his depth in ¼ of an hour.
1/4 of an hour = (1/4 * 60) minutes = 15 minutes
Thus, the integer that represents Andrews depth in ¼ of an hour will be:
(4 feet per minute) * (15 minutes) = 60 feet
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Find the slope of the line
Answer:
m = 1/2
Step-by-step explanation:
We Know
The slope of a line is the rise/run
Pick 2 points (0,1) (2,2)
We see the y increase by 1, and the x increase by 2, so the slope of the line is
m = 1/2
Help me please first correct answer get branliest and please no essay
Answer:
6cm
Step-by-step explanation:
all the sides of a square are identical so we can assume the missing side as x
since all four sides are the same and the perimeter is the sum of all sides, we can write
x+x+x+x=24cm
4x=24cm
x=24/4
x=6cm
A large moving box has a volume of 45 cubic meters. The width of the box is 1. 5 meters. The length and height of the box are each whole number measurements that are greater than 2 meters. What could be the dimensions of the box? Give TWO possible answers
If A large moving box has a volume of 45 cubic meters then two possible sets of dimensions for the box are: 1.5 m x 5 m x 9 m, and 1.5 m x 3 m x 15 m.
One possible way to approach this problem is to use trial and error. Therefore, two possible sets of dimensions for the box are 1.5 m x 5 m x 9 m, and 1.5 m x 3 m x 15 m.
We know that the volume of the box is 45 cubic meters and that the width is 1.5 meters. We want to find two whole numbers for the length and height that work.
We can start by listing the factors of 45: 1, 3, 5, 9, 15, and 45. We can then try each of these factors as the length or height, and see if the other dimension is a whole number greater than 2.
For example, if we try length = 5, then the height would need to be 9 to get a volume of 45. However, the width would be 1.5, which is already less than 2, so this doesn't work. These are the dimensions.
Trying again, if we try length = 9, then the height would need to be 5 to get a volume of 45. In this case, the width would be height = 5, which is greater than 2, so this is a possible answer.
Continuing, if we try length = 3, then the height would need to be 15 to get a volume of 45. This gives us a width of 1.5, which is less than 2, so this doesn't work.
Finally, if we try length = 15, then the height would need to be 3 to get a volume of 45. This gives us a width of height = 3, which is greater than 2, so this is another possible answer.
Therefore, two possible sets of dimensions for the box are: 1.5 m x 5 m x 9 m, and 1.5 m x 3 m x 15 m.
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Digitization positional errors may be less (say 2 meters) than the required positional accuracy of the data (say 5 meters) yet still prevent:
it is crucial to ensure that data collection methods and instruments meet the required accuracy standards.
How can Digitization positional errors can still be prevented?
Digitization positional errors can still prevent accurate analysis or decision making even if they are less than the required positional accuracy of the data. This is because the accuracy of the output or results depends on the accuracy of the input data.
For example, suppose a GPS receiver is used to collect data on the location of a pipeline, and the positional accuracy requirement is 5 meters. However, due to various factors such as signal interference or poor satellite coverage, the receiver only achieves an accuracy of 2 meters. Even though the positional error is less than the required accuracy, the resulting data may still be insufficient for the intended purpose, such as accurately identifying potential hazards or planning maintenance activities.
Inaccurate data can lead to wrong decisions, increased risks, and financial losses. Therefore, it is crucial to ensure that data collection methods and instruments meet the required accuracy standards.
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Digitization positional errors may be less (say 2 meters) than the required positional accuracy of the data (say 5 meters) yet still prevent achieving the desired level of accuracy for the intended use of the data.
Makayla's local movie theater has a moviegoer club that charges an annual registration fee of $25. However, movie tickets are discounted for members at $6. 00 per ticket, instead of the regular $9. 00 per ticket. Let m equal the number of movie tickets Makayla purchases in a year. Write a function to
model the amount of money Makayla spent going to the movies during the year she joined the club
The amount of money Makayla spent on the movies during the year she joined the club will be represented by (m) = 6x + 25.
We have to represent the given situation with a function. The club charges a registration fee of 55 dollars and the discount value for the club members is 6 dollars per ticket. Here, we will use x to represent the number of movie tickets.
The domain is represented by m and so it should be a whole number. It cannot be an integer as integers include negative numbers too. It cannot be a rational number because it cannot include decimals and as we know we can't buy part of a ticket. It can also not be a real number because it can't include irrational numbers.
So, our function will be (m) = 6x + 25.
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Which statement completes the following
A. Consecutive interior angles
B. Alternate interior angles
C. Corresponding angles
D. Alternate exterior angles
The ∠ ABE and ∠HCD are alternate exterior angle.option(D) is correct.
What is alternate exterior angle?An alternate exterior angle is an angle formed by a pair of lines and a transversal, such that the angle is located on the outside of the two lines, and on the opposite side of the transversal. More specifically, if line AB is intersected by transversal CD at point E, and angles 1 and 2 are formed as shown in the diagram below, then angle 1 and angle 2 are alternate exterior angles:
Alternate exterior angles are congruent if the two intersected lines are parallel. This means that the measure of angle 1 is equal to the measure of angle 2.
So, ∠ ABE and ∠HCD are alternate exterior angle.option(D) is correct.
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Select allá transformations that Will map a pentágon onto itself
There are several transformations that can be applied to a pentagon in order to map it onto itself. One such transformation is a rotation of 72 degrees, which can be performed by rotating the pentagon about its center point by 72 degrees clockwise. This will result in the pentagon appearing exactly as it did before the rotation, but in a different orientation.
Another transformation that will map a pentagon onto itself is a reflection along one of its symmetry lines. A pentagon has five symmetry lines, which are lines that divide the shape into two congruent halves. Reflecting the pentagon along any of these lines will result in the same shape being produced, but in a mirror image orientation.
Finally, a translation can also be used to map a pentagon onto itself. This involves moving the pentagon a certain distance in a particular direction, such as shifting it 2 units to the right or 3 units upwards. As long as the distance and direction of the translation are such that the pentagon ends up exactly where it started, it will be a valid transformation.
Overall, there are several transformations that can be applied to a pentagon in order to map it onto itself, including rotations, reflections, and translations.
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8 girls eat a total of 210 candies. after adding the number of candies eat by the ninth girl, the average number of candies eaten became 29. how many did the 9th girl eat?
The 9th girl ate 51 candies.
What is the number of candies eaten by the 9th girl, if the average number of candies eaten by 9 girls is 29 and the first 8 girls ate a total of 210 candies?Let the number of candies eaten by the 9th girl be x.
The average number of candies eaten by 8 girls is given as (210/x+210)/8, which simplifies to 210/8 + x/8.
After the 9th girl eats x candies, the total number of candies eaten becomes 210 + x.
The new average is given as (210 + x)/9 = 29.
Solving for x, we get:
210 + x = 261
x = 51
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There were three ant hills in Mrs. Brown's yard. The first ant hill had 4,867,190 ants. The second ant hill had 6,256,304 ants, and the third ant hill had 3,993,102 ants. Choose the best estimate of the number of ants in Mrs. Brown's yard
The best estimate of the number of ants in Mrs. Brown's yard is 15,116,596.
What is arithmetic sequence?
An arithmetic sequence is a sequence of numbers in which each term after the first is found by adding a fixed constant number, called the common difference, to the preceding term.
Mrs. Brown's yard has three ant hills, each with a different number of ants. To estimate the total number of ants in the yard, we simply add up the number of ants in each hill.
The first hill has 4,867,190 ants, the second has 6,256,304, and the third has 3,993,102. When we add these numbers together, we get a total of 15,116,596 ants in Mrs. Brown's yard. Of course, this is just an estimate, as there may be other ant hills or individual ants scattered around the yard.
However, this calculation gives us a good approximation of the number of ants in the yard based on the information given.
To estimate the total number of ants in Mrs. Brown's yard, we can add up the number of ants in each of the three ant hills:4,867,190 + 6,256,304 + 3,993,102 = 15,116,596.
Therefore, the best estimate of the number of ants in Mrs. Brown's yard is 15,116,596.
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A car dealership has 98 cars on its lot. Fifty-five of the cars are new. Of the new cars, 36 are domestic cars. There are 15 used foreign cars on the lot. Organize this information in a two-way table. Include the marginal frequencies
Here is a two-way table that summarizes the information:
The marginal frequencies (totals) are shown in the last row and last column. The dealership has a total of 98 cars on its lot, which is the sum of the new and used cars. There are 55 new cars and 15 used cars, which is the sum of the domestic and foreign cars in each category.
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The volume of a cone is 2560π cm cubed. The diameter of the circular base is 32 cm. What is the height of the cone?
Answer:
h = 30 cm
Step-by-step explanation:
Given:
V (volume) = 2560π cm^3
d (diameter) = 32 cm (r (radius) = 0,5 × 32 = 16 cm)
Find: h (height) - ?
[tex]v = \frac{1}{3} \times\pi {r}^{2} \times h[/tex]
[tex]h = \frac{v}{ \frac{1}{3} \times \pi {r}^{2} } = \frac{2560\pi}{ \frac{1}{3} \times \pi \times {16}^{2} } = 30[/tex]
[tex]h = \frac{2560\pi}{ \frac{1}{3} \times \pi \times {16}^{2} } [/tex]
UNO is card game: standard UNO deck consist of 108 cards four each of Wild and Wild Draw Four; and 25 each of four different colors (red yellow; green, blue): Each color consists of number cards (one zero, two each of through 9) and two cards each of Skip, Draw Two and Reverse_ These last three types are known as action cards. To begin the game (using well shufiled deck) seven card hand is dealt to each player (without replacement) . Consider an outcome space without order Without worrying about how many players are there, find the probability of a player starting of with: a whole hand of action cards_ b a hand of cards with out any Wild (Wild or Wild Draw Four) cards. Explain your answer by giving clear description of an equally-likely outcomes model on which it is based_ In other words, tell me what 0 and events you are using; how many elements they have?
Therefore, a person starts with a hand of cards without any Wild (Wild or Wild draw four) is 0.5741
and a number of outcomes of event 'B' is 16007560800.
How to solvetotal number of cards = N = 108
wild cards = 4
wild draw four = 4
we have 4 different colors and each color has 25 cards with break down as
zero numbered card = 1
numbered from 1 to 9 = 2 each (total 18)
skip = 2
draw two = 2
reverse = 2
skip, draw two and reverse are action cards
therefore, in a deck of UNO we have 3*2*4 = 24 action cards
a seven-card hand is dealt to each player from a well shuffled pack of card.
therefore, as each card is equally likely, we have total possible outcomes as 108C7
Ω is a event of every possible outcome and it has 108C7 = 27883218168 elements
an equally likely model is a model where equal weights are attached to every outcome and thus the probability of each outcomes become equal.
1) let 'A' be the event a whole hand is of action cards.
we have a total of 24 action cards in a UNO deck of 108 cards.and we have to draw a hand of 7 cards
total number of outcomes for event 'A' is 24C7
therefore, the probability that a player starting with a whole hand of action cards is
= [tex]24C7\n108C7\n[/tex]
= 0.0000124
therefore, a person starts with a whole hand of action card is 0.0000124
and the number of outcomes of event 'A' is 346104
2) let 'B' be the event that a hand of card is without any wild card
therefore we have a total of 100 cards that do not have any wild ( wild or wild draw four) cards
therefore a hand of 7 out of 100 cards for event 'B' can be drawn in 100C7 total ways
therefore, the probability that a player starts with a hand of cards without any Wild (Wild or Wild draw four) cards is
= [tex]100C7\n108C7\n[/tex]
= 0.5741
therefore, a person starts with a hand of cards without any Wild (Wild or Wild draw four) is 0.5741
and the number of outcomes of event 'B' is 16007560800.
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The height of three basketball players is 210 cm, 220 cm and 191 cm.
What is their average height?
Answer:
Average height = 207 cmStep-by-step explanation:
It's given that, The height of three basketball players is 210 cm, 220 cm and 191 cm.
h₁ = 210 cm
h₂ = 220 cm
h₃ = 191 cm
Total number of observations = 3.
Average = Sum of all observations/Total number of observations.
↠ Average = h₁ + h₂ + h₃/3
↠ Average = 210 +220 + 191 /3
↠ Average = 430 + 191/3
↠ Average = 621/3
↠ Average = 207
Therefore, The required average height is 207 cm.
