If the motion of a point on the drum of a clothes dryer is modeled by the function y=12 sin (4/3π t) +20, the dryer rotates 40 times per minute.
The function y = 12 sin (4/3π t) + 20 models the vertical motion of a point on the drum of a clothes dryer. The amplitude of the function is 12, which represents the maximum displacement of the point from its rest position. The vertical shift of the function is 20, which represents the height of the point from the ground when the drum is at rest.
To determine the number of times the dryer rotates per minute, we need to find the period of the function, which is the time it takes for the function to complete one full cycle. The period of a sinusoidal function is given by the formula:
T = (2π) / b
where b is the coefficient of the t variable in the sine or cosine function.
In this case, b = (4/3)π, so the period of the function is:
T = (2π) / (4/3π) = 3/2 seconds
This means that the point on the drum completes one full cycle of vertical motion every 3/2 seconds. To convert this to rotations per minute, we need to find the number of cycles per minute:
cycles per minute = (60 seconds per minute) / (3/2 seconds per cycle) = 40 cycles per minute
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A circle is growing, its radius increasing by 5 mm per second. Find the rate at which the area is changing at the moment when the radius is 28 mm. When the radius is 28 mm, the area is changing at approximately _____.
The formula for the area of a circle is A = πr^2, where A is the area and r is the radius.
We are given that the radius is increasing at a rate of 5 mm per second. This means that the rate of change of the radius with respect to time is dr/dt = 5 mm/s.
To find the rate at which the area is changing, we need to find dA/dt, the derivative of the area with respect to time. We can use the chain rule to find this derivative:
dA/dt = dA/dr * dr/dt
We can find dA/dr by taking the derivative of the area formula with respect to r:
dA/dr = 2πr
Now we can substitute the values we know into the chain rule formula:
dA/dt = dA/dr * dr/dt = 2πr * 5
When the radius is 28 mm, the rate of change of the area is:
dA/dt = 2π(28) * 5 = 280π ≈ 879.64 mm^2/s
Therefore, the area is changing at a rate of approximately 879.64 mm^2/s when the radius is 28 mm.
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A new plane can travel 1200000 m in 120 minutes. Find its speed in km/h.
Answer:
Step-by-step explanation:
We can start by converting the distance and time to the appropriate units.
1200000 meters = 1200 kilometers (since 1 kilometer = 1000 meters)
120 minutes = 2 hours (since 1 hour = 60 minutes)
Now we can use the formula:
speed = distance / time
speed = 1200 km / 2 hours
speed = 600 km/h
Therefore, the speed of the new plane is 600 km/h.
Answer: 600km/
First step:
1200000m=1200Km * 1m=0,001km
Second step:
120min=2h *1h=60min
Last step:
1200km÷2h= 600km/
SOLUTION
600km/
Step-by-step explanation:
Tom Jones, a mechanic at Golden Muffler Shop, is able to install new mufflers at an average rate of 3 per hour (exponential distribution). Customers seeking this service, arrive at the rate of 2 per hour (Poisson distribution). They are served first-in, first-out basis and come from a large (infinite population). Tom only has one service bay.
a. Find the probability that there are no cars in the system.
b. Find the average number of cars in the system.
c. Find the average time spent in the system.
d. Find the probability that there are exactly two cars in the system
a. To find the probability that there are no cars in the system, we need to use the formula for the steady-state probability distribution of the M/M/1 queue:
P(0) = (1 - λ/μ)
where λ is the arrival rate (2 per hour) and μ is the service rate (3 per hour).
P(0) = (1 - 2/3) = 1/3 or 0.3333
Therefore, the probability that there are no cars in the system is 0.3333.
b. To find the average number of cars in the system, we can use Little's Law:
L = λW
where L is the average number of cars in the system, λ is the arrival rate (2 per hour), and W is the average time spent in the system.
We can solve for W by using the formula:
W = 1/(μ - λ)
W = 1/(3 - 2) = 1 hour
Therefore, the average number of cars in the system is:
L = λW = 2 x 1 = 2 cars
c. To find the average time spent in the system, we already calculated W in part b:
W = 1 hour
d. To find the probability that there are exactly two cars in the system, we need to use the formula for the steady-state probability distribution:
P(n) = P(0) * (λ/μ)^n / n!
where n is the number of cars in the system.
P(2) = P(0) * (λ/μ)^2 / 2!
P(2) = 0.3333 * (2/3)^2 / 2
P(2) = 0.1111 or 11.11%
Therefore, the probability that there are exactly two cars in the system is 11.11%.
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You get a part time job earning $12.50/hr. Tips are $4.60/hr average. Deductions are FICA (7.65%) and Federal Tax Withholding (10%). You work for 18 hours. What is your gross base pay?
If you are earning $12.50/hr in a part-time job, then your gross "base-pay" after deductions is $253.48.
Your base pay is $12.50/hr and you worked for 18 hours, so the base pay would be:
⇒ $12.50/hr × 18 hrs = $225;
The tips are $4.60/hr on average, so the "total-tips" earned would be:
⇒ $4.60/hr × 18 hrs = $82.80;
To calculate the "total-deductions", we first find the total percentage deducted, which is the sum of FICA and Federal Tax Withholding:
⇒ 7.65% + 10% = 17.65%,
To find the total amount deducted, we multiply the total percentage deducted by the "base-pay" + "tips";
⇒ 17.65% x ($225 + $82.80) = $54.32,
So the pay, before any deductions, is the sum of "base-pay" and "tips";
⇒ $225 + $82.80 = $307.80;
To find the "net-pay", we subtract "total-deductions" from pay;
We have,
⇒ $307.80 - $54.82 = $253.48,
Therefore, your gross base pay is $253.48.
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Answer:
add the tips and pay together , this equals 17.10
then multiply by the 18 hours and you’ll get 307.80
Step-by-step explanation:
In between classes, Jade plays a game of online Monopoly on her laptop. Using the sample space for rolling two dice that you created in the Group portion of this lesson, find the probability that when Jade rolls the two dice, she gets the outcome given. Express your answers in exact simplest form
The probability that Jade gets the specific outcome you're interested in when rolling two dice is 1/6.
To find the probability that Jade gets a specific outcome when rolling two dice, we will use the sample space for rolling two dice, which consists of 36 possible outcomes (since there are 6 sides on each die, and we have 2 dice: 6 x 6 = 36).
Step 1: Determine the specific outcome you are interested in (for example, the sum of the numbers on the dice being 7).
Step 2: Count the number of ways this outcome can occur. For example, if we want a sum of 7, there are 6 possible outcomes: (1, 6), (2, 5), (3, 4), (4, 3), (5, 2), and (6, 1).
Step 3: Calculate the probability by dividing the number of successful outcomes by the total number of possible outcomes in the sample space.
In our example, there are 6 successful outcomes, and there are 36 possible outcomes in the sample space:
Probability = (Number of successful outcomes) / (Total number of possible outcomes) = 6/36
Step 4: Express the probability in its simplest form by reducing the fraction. In our example, 6/36 can be reduced to 1/6.
So, the probability that Jade gets the specific outcome you're interested in when rolling two dice is 1/6.
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The local regional transit authority of a large city was interested in determining the mean commuting time for workers who drove to work. They selected a random sample of 125 residents of the metropolitan region and asked them how long they spent commuting to work (in minutes). A 95% confidence interval was constructed and reported as (27. 74, 30. 06). Interpret the interval in the context of this problem. 2. A long distance telephone company recently conducted research into the length of calls (in minutes) made by customers. In a random sample of 45 calls, the sample mean was minutes and the standard deviation was s 5. 2 minutes. (a) Find a 95% confidence interval for the true mean length of long distance telephone calls made by customers of this company. X 1. 68
For the first problem, we can interpret the confidence interval as follows:
We are 95% confident that the true mean commuting time for workers who drive to work is between 27.74 and 30.06 minutes.
This means that if we were to repeat the sampling process many times and construct a 95% confidence interval each time, about 95% of those intervals would contain the true mean commuting time.
For the second problem, we can use the following formula to find a 95% confidence interval for the true mean length of long distance telephone calls:
[tex]CI = X ± t*(s/sqrt(n))[/tex]
Where X is the sample mean, s is the sample standard deviation, n is the sample size, and t is the t-value from the t-distribution with n-1 degrees of freedom for a 95% confidence interval.
Plugging in the values given, we get:
[tex]CI = 1.68 ± t*(5.2/sqrt(45))[/tex]
To find the value of t, we can look it up in a t-distribution table or use a calculator. For a 95% confidence interval with 44 degrees of freedom, we get t = 2.015.
Plugging this value in, we get:
[tex]CI = 1.68 ± 2.015*(5.2/sqrt(45)) = (0.86, 2.50)[/tex]
So we can interpret the interval as follows:
We are 95% confident that the true mean length of long distance telephone calls made by customers of this company is between 0.86 and 2.50 minutes longer or shorter than the sample mean of 1.68 minutes.
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what is the volume of a sphere with a radius of 2.5 ? answer in terms of pi
Answer:
Of course, I can assist you with your question. The volume of a sphere with a radius of 2.5 can be calculated using the formula (4/3)*pi*(2.5^3). This results in an answer of approximately 65.45 cubic units in terms of pi.
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EDIT: The volume of a sphere with a radius of 2.5 can be calculated using the formula V = (4/3)πr^3. Plugging in the value of r as 2.5, we get V = (4/3)π(2.5)^3. Simplifying this expression, we get V = 65.45π/3. Thus, the answer in terms of π is 65.45/3π or approximately 21.82π. None of the given options matches the calculated answer.
help I am not sure of the answer it asks for the domain and the range thank you
Answer:
480 - 96x = 0, so x = 5.
Domain: [0, 5]
Range: [0, 480]
Pls help me find the exponent!
Answer:
1.6×10^-12..............
if the area of a circle is 153.86m find diamiter and perimeter
Answer:
the diameter is 14 and the perimeter is 43.97
given a standard deck of cards, what is the probability of choosing a diamond, then a heart, then a black card if no replacement is made
Answer:The probability of both is 1/4*13/51.
Step-by-step explanation:
There are 52 cards in the deck, 13 hearts and 13 spades. The probability of getting a heart is 13/52 or 1/4. Given an initial heart there are 51 cards remaining; the probability of a spade is now 13/51
Do couples get engaged or not? If they are engaged, how long did they date before becoming engaged? A poll of 1000 couples conducted by Bruskin and Goldring Research for Korbel Champagne Cellars gave Time Never Engaged Number of Couples 200 the following information: Time Number of Couples Never Engaged 200 Less than 1 year 240 1 to 2 years 210 More than 2 years 350 What is the sample space in this problem?
The sample space in this problem is the total number of couples surveyed, which is 1000.
The sample space in probability refers to the set of all possible outcomes of an experiment. In this case, the experiment is the survey conducted by Bruskin and Goldring Research, and the possible outcomes are the different categories of time taken by couples before getting engaged.
The given information provides the number of couples in each category, which can be added to find the total number of couples surveyed:
Sample space = Number of couples never engaged + Number of couples engaged for less than 1 year + Number of couples engaged for 1 to 2 years + Number of couples engaged for more than 2 years
Sample space = 200 + 240 + 210 + 350
Sample space = 1000
Therefore, the sample space in this problem is 1000, which represents the total number of couples surveyed by the research firm.
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Indetify the mononial, binomail or trinomial
4x2 - y + oz4
The given expression is a trinomial because it consists of three terms: 4x²-y+oz⁴
A trinomial is a polynomial with three terms. It is a type of algebraic expression that consists of three monomials connected by addition or subtraction. The general form of a trinomial is:
ax^2 + bx + c
A monomial is an algebraic expression that consists of a single term. It is a polynomial with only one term. A term is a combination of a coefficient and one or more variables raised to non-negative integer exponents. The general form of a monomial is:c * xᵃ, yᵇ, zⁿ....
where 'c' represents the coefficient (a constant), and 'x', 'y', 'z', etc., represent variables, each raised to a non-negative exponent (a, b, n, etc.).
example of monomials: 5x² - This monomial has a coefficient of 5 and a single variable 'x' raised to the power of 2.
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Jane moved from a house with 78 square feet of closet space to an apartment with 47.58 square feet of closet space. what is the percentage decrease of jane's closet space?
Jane's closet space decreased by approximately 38.97%.
To find the percentage decrease of Jane's closet space, we need to first calculate the amount of decrease and then express it as a percentage of the original value.
The amount of decrease is the difference between the original closet space and the new closet space:
Decrease = Original closet space - New closet space
Decrease = 78 - 47.58
Decrease = 30.42
So Jane's closet space decreased by 30.42 square feet.
To express this decrease as a percentage of the original value, we use the following formula:
Percentage decrease = (Decrease / Original value) x 100%
Substituting the values, we get:
Percentage decrease = (30.42 / 78) x 100%
Percentage decrease ≈ 38.97%
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Samuel buys 3 bottles of juice that each have an original price of $2.80. He uses a coupon for 35% off. How much does Samuel pay for 3 bottles of juice? Show your work.
________________________________
= $2.80 × 3 Bottles= $8.04= 35% × $8.04= $2.94= $8.04 - $2.94= $5.46Samuel Pays $5.46 For The 3 Bottles of Juice.________________________________
In which type of statistical study is the population influenced by researchers?
The type of statistical study in which the population is influenced by researchers is known as an experimental study.
In an experimental study, researchers manipulate one or more variables to observe the effect on another variable. The population in an experimental study is usually a sample that is randomly selected to represent the larger population.
The researchers intentionally intervene in the study, which can impact the behavior or responses of the participants. This can be seen as a form of bias since the researchers are influencing the population. However, in some cases, this is necessary to determine causality or to test a hypothesis.
To minimize bias, experimental studies often use control groups. The control group is used to provide a baseline for comparison with the group that is exposed to the manipulated variable. This helps to determine if any observed effects are due to the intervention or if they are due to other factors.
In summary, an experimental study is the type of statistical study in which the population is influenced by researchers. While this can introduce bias, the use of control groups and other measures can help to minimize the impact of this bias on the results.
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PLEASEEEEEEEEEEEEEEE HEEEEEEEEEEEELP
If a force of 1500 N is applied on a cart with a mass of 500 Kg, calculate the
acceleration of the cart
Answer:
3 m/s²
Step-by-step explanation:
We can use Newton's Second Law of Motion. The Second Law of Motion states that acceleration is calculated by dividing the force by the mass.
[tex]A=\frac{F}{m}[/tex] with f being the force and m being the mass
We know that the force is 1,500 N and the mass is 500 kg.
So, let's substitute:
[tex]A=\frac{1500}{500}\\A=3[/tex]
So the acceleration of the cart is 3 m/s²
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Victoria drove 76 miles, burning 4 gallons of gasoline. She knows the total number of miles she can drive is proportional to the number of gallons of gas she burns and wants to create an equation that can be used to predict the number of miles she can drive for any number of gallons of gas used. Drag the correct values to create an equation which will accurately represent the total number of miles, m, Victoria should expect to be able to drive if she uses g gallons of gasoline
The equation that represents the total number of miles, m, Victoria should expect to be able to drive if she uses g gallons of gasoline is m = (19g).
We can determine the proportionality constant by dividing the total number of miles driven (76) by the number of gallons of gasoline burned (4), which gives us 19 miles per gallon (76/4 = 19).
We can then use this proportionality constant to create the equation m = (19g), where m represents the total number of miles Victoria should expect to be able to drive if she uses g gallons of gasoline. This equation tells us that for every additional gallon of gasoline burned, Victoria should expect to be able to drive an additional 19 miles.
For example, if Victoria were to burn 6 gallons of gasoline, she should expect to be able to drive 114 miles (6 x 19 = 114). This equation assumes that Victoria's car has a constant fuel efficiency of 19 miles per gallon.
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Find the inverse for each relation: 4 points each
1. {(1,‐2), (2, 3),(3, ‐3),(4, 2)}
2. {(4,2),(5,1),(6,0),(7,‐1)}
Find an equation for the inverse for each of the following relations.
3. Y=-8x+3
4. Y=2/3x-5
5. Y=1/2x+10
6. Y=(x-3)^2
Verify that f and g are inverse functions.
7. F(x)=5x+2;g(x)=(x-2)/5
8. F(x)=1/2x-7;g(x)=2x+14
The inverse for each relation:
1. {(1,‐2), (2, 3),(3, ‐3),(4, 2)} - {(-2, 1), (3, 2), (-3, 3), (2, 4)}
2. {(4,2),(5,1),(6,0),(7,‐1)} - {(2, 4), (1, 5), (0, 6), (-1, 7)}
3. Inverse equation: y=(-1/8)x+3/8
4. Inverse equation: y=3/2x+15/2
5. Inverse equation: y=2x-20
6. Inverse equation: y=[tex]x^{(1/2)}+3[/tex]
7. Since fog(x) = gof(x) = x, f and g are inverse functions.
8. Since fog(x) = gof(x) = x, f and g are inverse functions.
1. To find the inverse of the relation, we need to swap the positions of x and y for each point and then solve for y.
{(1, -2), (2, 3), (3, -3), (4, 2)}
Inverse: {(-2, 1), (3, 2), (-3, 3), (2, 4)}
2. Again, we swap x and y and solve for y.
{(4, 2), (5, 1), (6, 0), (7, -1)}
Inverse: {(2, 4), (1, 5), (0, 6), (-1, 7)}
3. To find the inverse equation for y=-8x+3, we swap x and y and solve for y.
x=-8y+3
x-3=-8y
y=(x-3)/-8
Inverse equation: y=(-1/8)x+3/8
4. To find the inverse equation for y=2/3x-5, we swap x and y and solve for y.
x=2/3y-5
x+5=2/3y
y=3/2(x+5)
Inverse equation: y=3/2x+15/2
5. To find the inverse equation for y=1/2x+10, we swap x and y and solve for y.
x=1/2y+10
x-10=1/2y
y=2(x-10)
Inverse equation: y=2x-20
6. To find the inverse equation for y=(x-3)², we swap x and y and solve for y.
x=(y-3)²
[tex]x^{(1/2)}=y-3[/tex]
[tex]y=x^{(1/2)}+3[/tex]
Inverse equation: [tex]y=x^{(1/2)}+3[/tex]
7. To verify that f(x)=5x+2 and g(x)=(x-2)/5 are inverse functions, we need to show that fog(x)=gof(x)=x for all x in the domain of f and g.
fog(x) = f(g(x)) = f((x-2)/5) = 5((x-2)/5) + 2 = x
gof(x) = g(f(x)) = g(5x+2) = ((5x+2)-2)/5 = x/5
Since fog(x) = gof(x) = x, f and g are inverse functions.
8. To verify that f(x)=1/2x-7 and g(x)=2x+14 are inverse functions, we need to show that fog(x)=gof(x)=x for all x in the domain of f and g.
fog(x) = f(g(x)) = f(2x+14) = 1/2(2x+14) - 7 = x
gof(x) = g(f(x)) = g(1/2x-7) = 2(1/2x-7) + 14 = x
Since fog(x) = gof(x) = x, f and g are inverse functions.
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A 40 -degree angle is translated 5 inches along a vector. What is the angle measurement, in degrees, of the image?
The angle measurement would remain as 40 degrees
Does angle change when translated?No, when a geometric figure, such as a line or an angle, is translated (moved) to a new position without being rotated, reflected, or scaled, its shape and size do not change, and therefore its angle measure remains the same.
This property is a fundamental concept in geometry and is known as the "invariance of angle measure under translation". It means that if two angles are congruent (have the same measure) in their original position, they will remain congruent after being translated to a new position.
Hence The angle measurement would remain as 40 degrees
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"Consider the following function: f(x,y)=y^5 ln(−2x^4+3y^5) find fx and fy"
From the function f(x,y)=y⁵ ln(−2x⁴+3y⁵). The value of fx = -10x³y⁵ / (-2x⁴ + 3y⁵) and
fy = y⁴ * ln(-2x⁴ + 3y⁵) * d/dy [(-2x⁴ + 3y⁵)]
To find fx, we differentiate f(x,y) with respect to x, treating y as a constant:
fx = d/dx [y⁵ ln(-2x⁴ + 3y⁵)]
Using the chain rule and the derivative of ln u = 1/u, we have:
fx = y⁵ * 1/(-2x⁴ + 3y⁵) * d/dx [-2x⁴ + 3y⁵]
Simplifying and applying the power rule of differentiation, we get:
fx = -10x³y⁵ / (-2x⁴ + 3y⁵)
Similarly, to find fy, we differentiate f(x,y) with respect to y, treating x as a constant:
fy = d/dy [y⁵ ln(-2x⁴ + 3y⁵)]
Using the chain rule and the derivative of ln u = 1/u, we have:
fy = y⁴ * ln(-2x⁴ + 3y⁵) * d/dy [(-2x⁴ + 3y⁵)]
Applying the power rule of differentiation and simplifying, we get:
fy = 15y⁴ ln(-2x⁴ + 3y⁵)
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please help, I don't understand how to solve these Geometry questions.
The segment lengths are given as follows:
6. AB = 15.
7. RS = 47.
How to obtain the length of segment TU?The length of segment TU is obtained applying the trapezoid midsegment theorem, which states that the length of the midsegment of the trapezoid is equals to the mean of the length of the bases of the trapezoid.
For item 6, we have that the mean of AB = x and 29 is of 22, hence:
(x + 29)/2 = 22
x + 29 = 44
x = AB = 15.
The value of x in item 7 is obtained as follows:
3x + 5 = (2x + 15 + 6x - 37)/2
8x - 22 = 6x + 10
2x = 32
x = 16.
Hence the length of RS is given as follows:
RS = 2 x 16 + 15
RS = 47.
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b) In a certain group of 200 persons, 110 can speak Nepali, 85 can speak Maithili and 60 can speak both the languages. Find, (i) how many of them can talk in either of these languages? (ii) how many of them can talk in neither of these languages?
Answer:
(i) 135, (ii) 65-----------------------
Given:
Total number in the group - 200 persons,Nepali speakers - 110,Maithili speakers - 85,Both - 60.(i) We know 60 out of 110 can speak both languages, so as 60 out of 85. The number 60 is counted twice if we add them together.
Find the number of those speak either language:
Either = sum of each - bothEither = 110 + 85 - 60 = 135(ii) Find the number of thise who can talk neither of these languages:
Neither = total - eitherNeither = 200 - 135 = 65Under her cell phone plan Yaritza pays a flat cost of $41 and 50 Cent per month and five dollars per gigabyte she wants to keep her bill under $60 per month which inequality can be used to determine ask the minimum number of gigabytes Yahritza can use while staying within her budget
Answer:3 gigabytes of storage.
Step-by-step explanation: Because you start at $41.50 and add 5 is $46.60 and then add 5 again and you get $51.50 then add 5 more you get $56.50.
Choose the correct symbol to compare the expressions. Do not multiply. 7×
2
10
?7
The correct symbol to compare the expressions is < (less than).
7 × (2/10) is equivalent to 1.4, which is less than 7. Therefore, 7 is greater than 1.4, and we can write 7 × (2/10) < 7 as the comparison between the expressions.
To compare the two expressions, we can analyze their values without actually multiplying them. The expressions are:
1. 7 × (2/10)
2. 7
Now let's simplify the first expression without multiplying:
7 × (2/10) = 7 × (1/5) (since 2 and 10 have a common factor of 2)
Now let's compare:
7 × (1/5) ? 7
Since we're multiplying 7 by a fraction that is less than 1 (1/5), the result will be smaller than 7. Therefore, the correct comparison symbol is "<":
7 × (1/5) < 7
The correct expression so formed is 7 × (2/10) < 7.
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U = {all triangles}
E = {x|x ∈ U and x is equilateral}
I = {x|x ∈ U and x is isosceles}
S = {x|x ∈ U and x is scalene}
A = {x|x ∈ U and x is acute}
O = {x|x ∈ U and x is obtuse}
R = {x|x ∈ U and x is right}
Which is a subset of I?
E
S
A
R
The set R is not a subset of I. the only subset of I from the given options is A
How we find the subset of I?The set I represents all isosceles triangles.
The set E represents all equilateral triangles, and an equilateral triangle is a special case of an isosceles triangle where all sides are equal. Therefore, the set E is a subset of I.
The set S represents all scalene triangles, and a scalene triangle is not isosceles since it does not have any equal sides. Therefore, the set S is not a subset of I.
The set A represents all acute triangles, and an acute isosceles triangle is a triangle where all angles are less than 90 degrees and two sides are equal in length. Therefore, the set A is a subset of I.
The set O represents all obtuse triangles, and an obtuse isosceles triangle is a triangle where one angle is greater than 90 degrees and two sides are equal in length. Therefore, the set O is not a subset of I.
The set R represents all right triangles, and a right isosceles triangle is a triangle where one angle is equal to 90 degrees and two sides are equal in length. the only subset of I from the given options is A.
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You buy a sheet with 10 stamps. Some are 45 cents and some are 30 cents. If it cost $4. 20 how many of each did you get
You bought 8 stamps that cost 45 cents each and 2 stamps that cost 30 cents each.
Let's assume you bought x stamps that cost 45 cents each and y stamps that cost 30 cents each.
From the given information, we can create two equations:
The total number of stamps is 10: x + y = 10.
The total cost is $4.20: 45x + 30y = 420 (since the cost is given in cents).
Now we can solve this system of equations to find the values of x and y.
We can multiply the first equation by 30 to eliminate y:
30x + 30y = 300.
Now we have a system of equations:
30x + 30y = 300,
45x + 30y = 420.
Subtracting the first equation from the second equation, we get:
45x + 30y - (30x + 30y) = 420 - 300,
15x = 120,
x = 120/15,
x = 8.
Substituting the value of x back into the first equation:
8 + y = 10,
y = 10 - 8,
y = 2.
Therefore, you bought 8 stamps that cost 45 cents each and 2 stamps that cost 30 cents each.
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4h(x)=x−4h, left parenthesis, x, right parenthesis, equals, x, minus, 4
what is the domain of h?h?
The given equation is 4h(x) = x - 4.
To find the domain of h(x), we need to determine the set of all possible input values for x that will result in a valid output value for h(x).
Since there are no restrictions on the input values for x in the given equation, the domain of h(x) is all real numbers.
Your answer: The domain of h(x) is all real numbers.
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The domain of the function 4h(x) = x - 4 is all real numbers, because there's no value of x that can make the equation undefined. It's represented as (-∞, ∞).
Explanation:In the function 4h(x) = x - 4, the variable x is an independent variable and it can take any real number as value. Therefore, the domain of this function refers to the set of all possible x-values. In other words, the domain of this function is all real numbers.
A function's domain is essentially the set of all values that can be plugged into the function without causing problems such as division by zero or taking the square root of a negative number. In the given equation, there's nothing that would limit the possible values of x.
Therefore, the domain of h(x) in this case is all real numbers, symbolically represented as (-∞, ∞).
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solve the triangle.
angle C = 16°
angle c = 32
angle b = 92
Find angle B, a, and A
Answer:
Step-by-step explanation:
To solve the triangle, we can use the law of sines and the fact that the sum of the angles in a triangle is 180 degrees.
First, we can find angle A by using the fact that the sum of the angles in a triangle is 180 degrees:
A = 180 - B - C
A = 180 - 92 - 16
A = 72 degrees
Next, we can use the law of sines to find side a:
a/sin(A) = c/sin(C)
a/sin(72) = 32/sin(16)
a = (32*sin(72))/sin(16)
a ≈ 89.4
Finally, we can use the fact that the sum of the angles in a triangle is 180 degrees to find angle B:
B = 180 - A - C
B = 180 - 72 - 16
B = 92 degrees
Therefore, the triangle has angle B = 92 degrees, angle A = 72 degrees, and side a ≈ 89.4.
helppppppppppppplppppppooo
Answer:
B, A, C
Step-by-step explanation:
The rate is the another name for the slope.
A:
Change in y over the change in x. You find the change by subtracting
[tex]\frac{7-3}{5-3}[/tex] = [tex]\frac{4}{2}[/tex] = 2
The rate is 2.
B:
Change in y over the change in x. You find the change by subtracting.
[tex]\frac{0-3}{-5-0}[/tex] = [tex]\frac{-3}{-5}[/tex] = [tex]\frac{3}{5}[/tex]
The rate is [tex]\frac{3}{5}[/tex].
C:
The rate is the number before the x in the equation.
The rate is 3.
Helping in the name of Jesus.