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Cloud [144]
3 years ago
8

Find the area of the shaded region. Use 3.14 for pi. Do not round. Use a calculator. Number 20 and 21. Ty.

Mathematics
1 answer:
sertanlavr [38]3 years ago
7 0
20. square-10+10=20x2=400m^2
circle- 3.14x10^2=3.14x100=314
400-314=86
86m^2

21.
i don't get 21 sorry
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If f (x)=8-5x, find the value of f(2-k)
Helen [10]

Hello from MrBillDoesMath!

Answer:

f(2-k) = -2 + 5k

Discussion:

If f(x) = 8 - 5x , then

f(2-k) = 8 - 5(2-k) =>

f(2-k) = 8 - 10 + 5k =>

f(2-k) = -2 + 5k

Regards,  

MrB


6 0
3 years ago
What is the equation of the following line? Be sure to scroll down first to see
Rom4ik [11]
<h2>Answer:</h2>

-1/3x

<h2>Step-by-step explanation:</h2><h3>Known :</h3>
  • x1 = -3
  • x2 = 0
  • y1 = 1
  • y2 = 0

<h3>Asked :</h3>
  • Correct line equation

<h3>Solution :</h3>

We can find the straight line equation using this formula,

\frac{y-y1}{y2-y1} = \frac{x-x1}{x2-x1}

Insert all we know inside the formula,

\frac{y-1}{0-1} = \frac{x-(-3)}{0-(-3)}\\\frac{y-1}{-1} = \frac{x +3}{3}\\

Use cross multiplication,

3(y - 1) = -1(x + 3)\

3y - 3 = -x - 3

3y = -x - 3 + 3

3y = -x

y = -1/3x

<h3>Conclusion :</h3>

The correct equation is y = -1/3x

6 0
2 years ago
Which expression shows the first step in dividing 4m – 1 by m?
Murljashka [212]
There should only be one step necessary

(4m-1) / m = 4 - 1/m
3 0
2 years ago
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4 0
2 years ago
5. Jamal carved 57 spoons on Saturday
tiny-mole [99]

Answer: 33

Step-by-step explanation:

57+42=99

99/3=33

3 0
3 years ago
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