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alisha [4.7K]
3 years ago
8

The area a equals pi R squared of a circular water ripple changes with the radius. At what rate does the area change with respec

t to the radius when r equals 4
Mathematics
1 answer:
scoray [572]3 years ago
6 0

Answer: πr2

Step-by-step explanation:

πr4

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3 years ago
Five friends—Allison, Beth, Carol, Diane, and Evelyn— have identical calculators and are studying for a statistics exam. They se
brilliants [131]

Answer:

20%

Step-by-step explanation:

this is because that 1 in 5 is equal to 20%

7 0
2 years ago
Look at the data set below:
Elenna [48]
Median: Sort from least to greatest and find the # in the middle.
Sort: 54, 58, 58, 60, 62. 
Number in the middle: 58, so the median is 58.
Mode: 58, because it appears most. 
Range: Subtracting bigger number from smaller number.
Finding it: 62-54 = 8
If you want to find the mean, then here:
Mean: Solving average (adding all #s together and dividing by how many numbers are there) <span>58 + 54 + 62 + 58 + 60 = 292.
</span>Divide by 5 = 58.4
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Follow if you want.
6 0
3 years ago
Read 2 more answers
Find the measure of each side of this triangles. Answer in exact form. ​ Find x and y
Firdavs [7]

Answer:

x = 24/√3

4√3 = y

Step-by-step explanation:

We are given that this is a right triangle as well as two angles and a side.

Given that the angles in a triangle add up to 180 degrees, and a right angle is 90 degrees, we can say that the missing angle is equal to

(180-90-30)  = 60 degrees

Next, given sohcahtoa, we can say that

sin(30) = opposite/hypotenuse = y/x

cos(30) = adjacent/hypotenuse = 12/x

tan(30) = opposite/adjacent = y/12

We want to only have one variable per equation so we can solve for the variable, so we can use

cos(30) = 12/x and tan(30) = y/12

Starting with cos(30) = 12/x, we can multiply both sides by x to remove the denominator to get

cos(30) * x = 12, and divide both sides by cos(30) to isolate the x and get

x = 12/cos(30). Next, cos(30) = √3/2, so we have

x = 12/(√3/2)

x = (12/1) / (√3/2)

x = (12/1) * (2/√3)

x = 24/√3

For y, we have

tan(30) = y/12

multiply both sides by 12 to isolate the y and remove the denominator

tan(30) * 12  = y

√3/3 * 12 = y

√3 * 4 = y

4√3 = y

4 0
3 years ago
Find the slope of the line that passes through (2, 12) and (5, 10).
Darina [25.2K]

The right answer is -2/3

please see the attached picture for full solution

Hope it helps..

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6 0
3 years ago
Read 2 more answers
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