Answers
Related Questions
The region r is enclosed by the curves y=4-4x2 and y=0
Answers
The region r is enclosed by the curves y₁ = 4 - 4x² and y₂ = 0 is 16/3 or 5.333 square units.
What is an area bounded by the curve?When the two curves intersect then they bound the region is known as the area bounded by the curve.
The region r is enclosed by the curves y₁ = 4 - 4x² and y₂ = 0
The intersection points will be
y₁ = y₂
4 - 4x² = 0
x = ±1
Then the area bounded by the curves will be
[tex]\rm Area = \int _{-1}^1 (y_1- y_2) dx\\\\Area = \int _{-1}^1 (4 - 4x^2) dx\\\\Area = \left [ 4x - \dfrac{4x^3}{3} \right ]_{-1}^1\\\\Area = 4 \left ( 1 + 1 \right ) - \dfrac{4}{3} \left ( 1^3 - (-1)^3 \right )\\\\Area = 8 - \dfrac{8}{3}\\\\Area = \dfrac{16}{3} = 5.333 \[/tex]
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Dave is selling magazines. He sold 2 for $3 and 3 for $5. What will Dave charge for 5 magazines if he keeps selling magazines at the same rate?
Answers
Gianna is making two different salads. One calls for 3 3/4 cups chopped spinach. The other calls for 2 2/3 cups chopped spinach. How much spinach dose Gianna Need?
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Two days ago, Susan was 18. Yesterday was her birthday and she is now 19. Next year, she will be 21. When is her birthday?
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Answer:
New Years Eve I think?
Step-by-step explanation:
It kinda makes sense.
Consider the quadratic inequality, x^2 - 3x < 10. When you solve the inequality the solution is -2
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Answer:
−2<x<5
Step-by-step explanation:
x2−3x=10
x2−3x−10=10−10(Subtract 10 from both sides)
x2−3x−10=0
(x+2)(x−5)=0(Factor left side of equation)
x+2=0 or x−5=0(Set factors equal to 0)
x=−2 or x=5
Check values in the intervals to see if they work.
x<−2(Doesn't work in original inequality)
−2<x<5(Works in original inequality)
x>5(Doesn't work in original inequality)
So, the proper answer for me is −2<x<5.
Landon draws a quadrilateral that is not a rhombus. which features could her quadrilateral have?
choose each correct answer. 4 sides
4 square corners
sides that are all the same length
2 sets of opposite sides that are the same length
sides that are all different lengths
Answers
sides that are all the same length
Kevin has 17 trading cards. Billy has more trading cards than Kevin. Choose the expression that shows how many trading cards Billy has.
A. t
B. t+17
C.17-t
D.t-17
Answers
Answer:
t + 17
Step-by-step explanation:
it’s this because, t + 17 = more than what Kevin has t = 17 I’m assuming which is why it’s B. Or t + 17.
The table shows the rainfall in four towns on the same day.
Town
Morristown 3 9/16
Brighton 3 5/16
Pine Grove 3 13/24
Springfield 3 8/12
Which town had more rain, Brighton or Springfield? Morristown or Pine Grove?
Answers
Answer:
Springfield trust me it is the only one that makes sense
The annual commissions per salesperson employed by a retailer of mobile communication devices are normally distributed, and averaged $40,000, with a standard deviation of $5,000. what percent of the salespersons earn between $32,000 and $42,000?
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Using the normal distribution, it is found that 60.06% of the salespersons earn between $32,000 and $42,000.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.The mean and the standard deviation are given, respectively, by:
[tex]\mu = 40000, \sigma = 5000[/tex]
The proportion of salespersons that earn between $32,000 and $42,000 is the p-value of Z when X = 42000 subtracted by the p-value of Z when X = 32000, hence:
X = 42000:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{42000 - 40000}{5000}[/tex]
Z = 0.4
Z = 0.4 has a p-value of 0.6554.
X = 32000:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{32000 - 40000}{5000}[/tex]
Z = -1.6
Z = -1.6 has a p-value of 0.0548.
0.6554 - 0.0548 = 0.6006 = 60.06%.
60.06% of the salespersons earn between $32,000 and $42,000.
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Answer: 60.06% of the salespersons earn between $32,000 and $42,000.
Suppose you leave your house and travel 13 mi due west. then you travel 3 mi due south. how far are you from your house?
Answers
13.34 mi
from question,
perpendicular (p) = 3mi
base(b) = 13 mi
hypotenuse (h) = ?
from Pythagoras theorem,
h^2 = p^2 + b^2
h = √(3^2 + 13^2)
h = √(9+169)
h= √(178)
h= 13.34 mi
Answer:
≈ 13.3 miles
Step-by-step explanation:
a line due west and a line due south form a right triangle with the hypotenuse being the direct distance x from the house.
using Pythagoras' identity in the right triangle , then
x² = 13² + 3² = 169 + 9 = 178 ( take square root of both sides )
x = [tex]\sqrt{178}[/tex] ≈ 13.3
distance from house ≈ 13.3 miles ( to the nearest tenth )
Two ocean beaches are being affected by erosion. The table shows the width, in feet, of each beach measured at high tide where 1995 is represented by year 0:
Year number Western Beach width (in feet) Dunes Beach width (in feet)
0 100 20
5 90 45
10 80 70
11 78 75
12 76 80
15 70 95
Describe the patterns shown by the erosion data measurements shown for each of the beaches in the table.
Between which years will the beaches have approximately the same width?
Assuming these rates remain constant, what can you do to get a better approximation of when the two beaches will have the same width?
please help ASAP. dont put wrong answers. people who have flvs and got a 100 on this pleasezanswer
Answers
The patterns shown by the erosion data measurements is that Western Beach is losing sand while Dunes beach is gaining sand.
What is erosion?It should be noted that erosion simply means the washing away of the top soil.
In this case, the patterns shown by the erosion data measurements is that Western Beach is losing sand while Dunes beach is gaining sand.
The years when the beaches have approximately the same width will be between 11 and 12 years.
Assuming these rates remain constant, to get a better approximation of when the two beaches will have the same width, one can plot the data against time and draw a curve that goes through the data.
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What is an equation of the line that passes through the points (-5, -1) and
(5, -3)?
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The answer is
[tex]y = - \frac{1}{5} x - 1.2[/tex]
or you can replace -1/5 with -0.2
follow the procedures in the attachment please.
The diameter of the Earth is 12,756 km,What is the volume of it?
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plssss i need help
ASAPP
Answers
Answer:
1 ) 1 cubic centimeter = 0.000001 cubic meters
2 ) 4 cubic meters = 4000000 centimeters
3 ) 948 cubic meters = 948000 liters
Step-by-step explanation:
1 )
Conversion
1 centimeter = 0.01 meters
1 cubic centimeter
= 0.01 x 0.01 x 0.01
= 0.000001 cubic meters
72 cubic meters
= 72 x 0.000001
= 0.000072 cubic centimeters
2 )
Conversion
1 meter = 100 centimeter
1 cubic meter
= 100 x 100 x 100
= 1000000 cubic centimeters
4 cubic meters
= 4 x 1000000
= 4000000 centimeters
3 )
Conversion
1 cubic meter = 1000 liters
948 cubic meters
= 948 x 1000
= 948000 liters
5. Paris wants to leave a message on 8 of her
friends' social networking sites. In how
many ways can she leave a message on
her friends' sites?
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Answer:
infinite because she can write as mutcha nd on as many asshe wats
What inequality does the number line show
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x>3
Inequalities with one variable are plotted on a number line, with the output representing the solution to the inequality. A number line is used to graph a linear inequality with only one variable. Two-dimensional graphs plot linear inequalities with two variables because the output gives the solution to both variables.
Answer:
x>3
Step-by-step explanation:
on a number line, an open circle indicates that the given value (3) isnt included and you would use < or >. a closed (filled in) means that the given value is included and u would use ≤ or ≥. the direction of the arrow (left of right) indicates if the values will be greater than or less than the value indicated by the circle (3). Here, the arrow is pointing right meaning that the values are getting larger until infinity starting at 3 (3 isnt included because of the open circle)
Dr. Strauss has a bottle that contains 18 ounces of medicine. How many one-fourth ounce doses are in 18 ounces?
Answers
Answer: 72 one-fourth ounce doses in 18 ounces
Step-by-step explanation:
1/4's in 1 is 4.
18x4=72
2/3 of a class are girls.
A) what is the ratio girls to boys in the class?
B) what is the ratio boys to girls in the class
Answers
a) 2:1
b) 1:2
Ratio of girls to boys is 2:1
Ratio of boys to girls is 1:2
==========================================================
Explanation:
2/3 of the class are girls. If the class had 3 people, then 2 of them are girls. The remaining 3-2 = 1 person is a boy.
The ratio of girls to boys has us list the number of girls (2) followed by the number of boys (1). Separate the values with a colon. That's how we end up with 2:1
The ratio of boys to girls will have us flip that previous ratio to get 1:2
The order is important when it comes to forming ratios.
Evaluate the line integral, where c is the given curve. C xeyz ds, c is the line segment from (0, 0, 0) to (2, 3, 4)
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The value of line integral is, 73038 if the c is the given curve. C xeyz ds, c is the line segment from (0, 0, 0) to (2, 3, 4)
What is integration?It is defined as the mathematical calculation by which we can sum up all the smaller parts into a unit.
The parametric equations for the line segment from (0, 0, 0) to (2, 3, 4)
x(t) = (1-t)0 + t×2 = 2t
y(t) = (1-t)0 + t×3 = 3t
z(t) = (1-t)0 + t×4 = 4t
Finding its derivative;
x'(t) = 2
y'(t) = 3
z'(t) = 4
The line integral is given by:
[tex]\rm \int\limits_C {xe^{yz}} \, ds = \int\limits^1_0 {2te^{12t^2}} \, \sqrt{2^2+3^2+4^2} dt[/tex]
[tex]\rm ds = \sqrt{2^2+3^2+4^2} dt[/tex]
After solving the integration over the limit 0 to 1, we will get;
[tex]\rm \int\limits_C {xe^{yz}} \, ds = \dfrac{\sqrt{29}}{12} (e^{12}-1)[/tex] or
= 73037.99 ≈ 73038
Thus, the value of line integral is, 73038 if the c is the given curve. C xeyz ds, c is the line segment from (0, 0, 0) to (2, 3, 4)
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Hannah has a chicken coop with six hens. Let X represent the total number of eggs the hens lay on a random day. The distribution for X is given in the table.
A 2-column table with 7 rows. Column 1 is labeled number of eggs with entries 0, 1, 2, 3, 4, 5, 6. Column 2 is labeled probability with entries 0.02, 0.03, 0.07, 0.12, 0.30, 0.28, 0.18.
What is the probability that the hens lay more than two eggs?
0.07
0.12
0.88
0.95
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The probability that the hens lay more than two eggs is 0.80
How to determine the probability?The probability that the hens lay more than two eggs is calculated using:
P(x > 2) = P(3) + P(4) + P(5) + P(6)
Using the data on the table, we have:
P(x > 2) = 0.12 + 0.30 + 0.2 +, 0.18.
Evaluate the sum
P(x > 2) = 0.80
Hence, the probability that the hens lay more than two eggs is 0.80
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Answer:
C. 0.88
Step-by-step explanation:
you just add all the probabilities for more than 2 eggs
0.12 + 0.30 + 0.28 + 0.18 = 0.88
Determine the slope of the line that runs through points (-3,6) And (0,-8) using the slope formula.
YT -- YT
M= --------------
X2 – X2
Answers
Answer:
-14/3
Step-by-step explanation:
6 - (-8) 14
---------- = --------
-3 - 0 -3
[tex]\large\textsc{answer :}[/tex]
Pls refer to "calculations" !
[tex]\large\textsf{\textbf{Calculations :}}[/tex]
[tex]\boxed{\\\begin{minipage}{3cm}\xrightarrow{slope \:formula : }\\ $\displaystyle\frac{y2-y1}{x2-x1} \\ \end{minipage}}[/tex]
[tex]\boxed{\\\begin{minipage}{3cm}\xrightarrow{slope\:of\:line\::} \\ $\displaystyle\frac{-8-6}{0-(-3)} \\ \end{minipage}}[/tex]
Simplify as follows :
[tex]\boxed{\\\begin{minipage}{3cm}\xrightarrow{slope\:of\:line\:: }\\ $\displaystyle\frac{-14}{0+3}$ \end{minipage}}}[/tex]
[tex]\boxed{\\\begin{minipage}{3cm}\xrightarrow{slope\:of\:line\::}$-\displaystyle\frac{14}{3}$ \\ \end{minipage}}[/tex]
[tex]\texttt{F}\textbf{I}\textsf{N}\pmb{A}\rm{L}\:\textsf{A}\textbf{N}\texttt{S}\rm{W}\sf{E}\mathbb{R}\::[/tex]
[tex]\text{$-\displaystyle\frac{14}{3} $}[/tex]
[tex]\small{\textsc{hope\:helpful~}[/tex]
50 POINTS!!
The Box-and-Whisker Plot below shows the distribution of scores on a weekly physics test. What is the median of this data set?
A. 80
B. 87
C. 70
D. 97
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Using the box-and-whisker plot, it is found that the median of the data-set is given by:
B. 87.
What does a box and whisker plot shows?A box and whisker plot shows three things:
The 25th percentile, which is the median of the bottom 50%.The median.The 75th percentile, which is the median of the upper 50%.In this plot, we have that:
The first percentile is of 80.The median is of 87.The third percentile is of 97.Hence option B is correct.
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Answer:
B) 87
Step-by-step explanation:
Hope it helps!
Find the value of x in the parallelogram below
Answers
Answer:
102° is the value of x
Step-by-step explanation:
A = 78°
B = x
C = 78°
D = x
All angles of parallelogram = 360°
→ A + B + C + D = 360°
→ 78° + x + 78° + x = 360°
→ 156 °+ 2x = 360°
→ 2x = 360° - 156°
→ x = 204/2
→ [ x = 102° ]
Hence, the value of x is 102°.
Natalia paid $38.95 for three medium-sized pizzas and a salad. if Natalia paid $11.98 for the salad, which equation can be used to find how much did each pizza cost?
A. 3m + $11.98 = $38.95
B. 4m + $11.98 = $38.95
C. 3m + $38.95 = $11.98
D. none of these
PLEASE HELP!!
Answers
Answer:
A
Step-by-step explanation:
$38.95 for 3 m size pizzas and a salad
38.95 = 3m + 11.98
Answer:
3m+$11.98=$38.95
Step-by-step explanation:
$11.98=one salad ,
3m=The price of three medium-sized pizza &
$38.95=The price of three medium-sized pizza & a salad
What is the inverse of y = x2 + 16
Answers
I’m not sure if I’m right or not
Answer:
[tex] {y}^{ - 1} = \sqrt{x - 16} [/tex]
Step-by-step explanation:
To find the inverse of this function, we make "x" the subject of the equation .[tex]y = {x}^{2} + 16 \\ {x}^{2} = y - 16 \\ x = \sqrt{y - 16} [/tex]then we interchange "y" and "x" .[tex]hence \: the \: inverse \: is \\ {y}^{ - 1} = \sqrt{x - 16} [/tex]Find the slope of the graphed line.
Multiple choice question.
A)
4/3
B)
3/4
C)
−4/3
D)
−3/4
Answers
Answer:
3/4 shall be our slope.
Step-by-step explanation:
You can solve the slope by doing this formula y₂ - y₁ / x₂ - x₁ = slope.
Your coordinates:
(-4,0) and (0,3)
You have to set up your formula:
3 is the y2 and 0 is the y1
3-0 for y so far.
Now, set up the x's
0 is our x2 more known as our second x
Then our x1 is -4
0 - (-4).
Our Formula:
3-0 / 0+4
**Notice the negatives canceled to a positive due to the rule.**
3/4 shall be our slope.
You could've also risen and run starting from (-4,0) to (0,3) to get a slope of 3/4.
Rewrite 39,500 × 103 in scientific notation.
Thank you
Answers
Step-by-step explanation:
39500 x 103 = 4,068,500
in scientific notation, that ia 4.0685 x 10⁶
The table here shows the mass of four objects in the solar system. how many times as massive as n is j?
a. 25
b. 23
c. 20
d. 19
Answers
Select all the numbers that are solutions that are equal x^2=15
Answers
Answer:
3x5=15
5x3=15
30/2=15
15x1=15
1x15=15
15/1=15
Step-by-step explanation:
Hope it helped !
Have a great day !
PLEASE HELP!!!!
ILL GIVE BRAINLIEST
Answers
Answer:
1,3
Step-by-step explanation:
I'm not too sure but 1and 3 look more like they are possible answers