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nikklg [1K]
3 years ago
6

What is the area of a regular pentagon with a side of 20 inches? can you explain?

Mathematics
1 answer:
san4es73 [151]3 years ago
6 0

here is the answer: A≈688.19in²

I cant really give you an explanation though

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Solve for "y" <br> 8y-4x=2
Marizza181 [45]
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-4x + 4x + 8y = 2 + 4x
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                  8         8
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7 0
3 years ago
Find the radius of a sphere whose surface area is 154cm².​with stepss
worty [1.4K]

Answer:

THIS IS YOUR ANSWER:

area \: of \: spere \:  = 4\pi \: r {}^{2}  \\ 154cm {}^{2} = 4 \times  \frac{22}{7}  \times r {}^{2}

\frac{154 \times 7}{4 \times 22} = r {}^{2} \\ r {}^{2} = 12.25 \\

r =  \sqrt{12.25} \\ r = 3.5cm

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7 0
2 years ago
Read 2 more answers
SOLVE THIS PROBLEM, PLEASE! :(
pashok25 [27]

Answer:

1st Blank: 5

2nd Blank: 3

3rd Blank: -8

4th Blank: -8

5th Blank: 12

Step-by-step explanation:

15x+35y=-100

-15x+9y=-252

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44y=-352

___   ___

44       44

y=-8

3x+7(-8)=-20

3x-56=-20

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8 0
3 years ago
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Answer:

b

Step-by-step explanation:

8x +4(x -1)

<em>Expand by multiplying 4 into each term inside the bracket:</em>

= 8x +4(x) +4(-1)

= 8x +4x -4

<em>Simplify</em>

= 12x -4

Thus, the answer is b.

7 0
2 years ago
Read 2 more answers
Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning.
julia-pushkina [17]

Answer:

  • D. Step 5

Step-by-step explanation:

Andrew made a mistake at last step.

<u>It should be:</u>

  • -11.8 + 9.8 = 9.8 - 11.8 = -2 but not -21.6
6 0
3 years ago
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