3 years ago

How do i find the area and perimeter?

1 answer:

7 0

Calculating the area and the perimeter The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle.

You might be interested in

Mellie bought a 120$ fishing rod for 15% off. How much did she pay after a 7% tax was added to the rod?

Sever21 [200]

Answer:

The answer is 109.14

Step-by-step explanation:

You have to take away 15% from 120$ which gives you 102$. Then you add 7% and that gives you 109.14

8 0

3 years ago

Please help me guys with this problem.

Anna71 [15]

I think the answer is 152 but I’m not 100% sure

7 0

3 years ago

Read 2 more answers

Let $\mu$ and $\sigma^2$ denote the mean and variance of the random variable x. determine $e[(x-\mu)/\sigma]$ and $e{[((x-\mu)/\

Nezavi [6.7K]

$\mathbb E\left(\dfrac{X-\mu}{\sigma}\right)=\dfrac1\sigma\mathbb E(X)-\dfrac\mu\sigma=\dfrac{\mu-\mu}\sigma=0$

$\mathbb E\bigg(\left(\dfrac{X-\mu}\sigma\right)^2\bigg)=\dfrac1{\sigma^2}\mathbb E\left(X^2-2\mu X+\mu^2\right)=\dfrac{\mathbb E(X^2)-2\mu\mathbb E(X)+\mu^2}{\sigma^2}$
$=\dfrac{\mathbb E(X^2)-2\mu^2+\mu^2}{\sigma^2}=\dfrac{\mathbb E(X^2)-\mu^2}{\sigma^2}=\dfrac{\mathbb E(X^2)-\mathbb E(X)^2}{\sigma^2}$
$=\dfrac{\mathbb V(X)}{\sigma^2}=\dfrac{\sigma^2}{\sigma^2}=1$

3 0

4 years ago

Which rectangle has an area of 40 square unts?

notsponge [240]

Answer:
Nether of the two rectangles have an area of 40 square units.

8 0

3 years ago

Which is the graph of 3y-5x>-6

FrozenT [24]

the answer is ....... D

7 0

3 years ago