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2 years ago

Find the area of the polygon with vertices of A(2, 2), B(2, 7), C(8, 7), and D(4, 2)

Mathematics

1 answer:

elena-s [515]2 years ago

7 0

Answer:

20 units²

Step-by-step explanation:

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Assume that y varies directly with x. If y=−4 when x=2, find y when x=−6. Enter in any fractions using a / (e.g. "1/2" is the sa

Inessa05 [86]

Answer: 12

Step-by-step explanation:

This is a direct proportion and we use the formula:

y = kx

If y = −4 when x=2, we need to find the constant of proportionality. This will be:

y = kx

-4 = 2k

k = -4/2

k = -2

To find y when x=−6 guess this:

y = kx

y = -2 × -6

y = 12

8 0

2 years ago

Find the diameter of a circle with an area of 226.98

andrey2020 [161]

Remember the formula of the area of a circle is:
$V = \pi * r^{2}$
SO given that
V = 226.98
and $\pi = 3.14$
Plug in a chug
226.98 = 3.14 * $r^{2}$
$r^{2}= 72.287$
r = 8.50

Remember that d = 2 * r
d = 2 * 8.5 = 17

3 0

3 years ago

How many solutions does the equation 4x + 8 = −2 − 2 + 5x have?

Anna71 [15]

4x + 8 = −2 − 2 + 5x
5x - 4x = 8 + 4
x = 12

There's only one solution, x = 12

3 0

3 years ago

Read 2 more answers

Why does everyone expect people to awnser questions but they never awnser any them selves like I need help and I've helped loads

Gnoma [55]

Answer:

thats crazy bro

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the solution to this equation? 8x - 5 (x-3) = 18

Kaylis [27]

Answer:

x=1

Step-by-step explanation:

We distribute the negative 5 to x minus three to get 8x-5x+15=18. Then, we cancel out the 15 by subtracting it from both sides. This leaves us with 8x-5x=3. When we subtract, we get 3x=3, and when we divide both sides by 3, we get x=1. Hope this helps :)

3 0

3 years ago