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3 years ago

14

How do you get the average of something

2 answers:

Irina-Kira [14]3 years ago

7 0

Answer:

add all the numbers together then divide that number my all the numbers you have

Step-by-step explanation: lets say you have 10,20,43,52,65 if you add them together you would get 190 so you would divide by the amount of numbers you have which would be 5 and the average for that set is 38

kogti [31]3 years ago

6 0

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

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Find the next three term of arithmetic sequence -9,-1,7,15,..

Oksi-84 [34.3K]

The pattern is +8

So the next three numbers are 23, 31, 39

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3 years ago

The scale of a map says that 6 cm represents 15 km.

atroni [7]

37.5 km is equal to 15 cm

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3 years ago

Find the area of the surface. The part of the surface z = xy that lies within the cylinder x2 + y2 = 36.

rewona [7]

Answer:

Step-by-step explanation:

From the given information:

The domain D of integration in polar coordinates can be represented by:

D = {(r,θ)| 0 ≤ r ≤ 6, 0 ≤ θ ≤ 2π) &;

The partial derivates for z = xy can be expressed as:

$y =\dfrac{\partial z}{\partial x} , x = \dfrac{\partial z}{\partial y}$

Thus, the area of the surface is as follows:

$\iint_D \sqrt{(\dfrac{\partial z}{\partial x})^2+ (\dfrac{\partial z}{\partial y})^2 +1 }\ dA = \iint_D \sqrt{(y)^2+(x)^2+1 } \ dA$

$= \iint_D \sqrt{x^2 +y^2 +1 } \ dA$

$= \int^{2 \pi}_{0} \int^{6}_{0} \ r \sqrt{r^2 +1 } \ dr \ d \theta$

$=2 \pi \int^{6}_{0} \ r \sqrt{r^2 +1 } \ dr$

$= 2 \pi \begin {bmatrix} \dfrac{1}{3}(r^2 +1) ^{^\dfrac{3}{2}} \end {bmatrix}^6_0$

$= 2 \pi \times \dfrac{1}{3} \Bigg [ (37)^{3/2} - 1 \Bigg]$

$= \dfrac{2 \pi}{3} \Bigg [37 \sqrt{37} -1 \Bigg ]$

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2 years ago

What is the greatest common factor of the polynomial 40x^7+135x^4+5x^4

tensa zangetsu [6.8K]

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Step-by-step explanation:

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3 years ago

Solve y = x + 4 for x,<br> Ox=y - 4<br> Ox=y+ 4<br> Ox=-y + 4<br> Ox=-y - 4

Hitman42 [59]

Answer:

x=y+4

Step-by-step explanation:

bc you add four bc it's the opposite

5 0

3 years ago