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evablogger [386]
2 years ago
11

What is the area of a regular pentagon with side length 20 feet? Can u guys show steps pls.

Mathematics
1 answer:
ivann1987 [24]2 years ago
4 0

Answer:

688.19m^2

Step-by-step explanation:

A=\frac{1}{4} \sqrt{5(5+2\sqrt{5} } a^2\\=\frac{1}{4} \sqrt{5(5+2\sqrt{5} }* 20^2\\=688.19096m^2\\=688.191m^2\\=688.19m^2

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Find two whole numbers with a sum of 15 and a product of 54
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(1) a=15-b ----(3)

put(3) in(2)

(15-b)*b=54
15b-b^2=54
b^2-15b+54=0
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so b=9 or b=6

if b=9 then a=15-9=6
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3 0
3 years ago
PLASE HELP ASAP, brainly >>>>>>>>>>>>>>>>>>>>>>>>>&gt
oksian1 [2.3K]

I Hope That I Am Not To Late, But The Answer Is D (7,4) <3

<u>Explanation </u>

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2 years ago
Mr. Shamir employs two part-time typists, Inna and Jim, for his typing needs. Inna charges $15 an hour and can type 6 pages an h
coldgirl [10]

Answer:

The minimum cost would be 480$ when Inna works for 8 hours and Jim works for 20 hours.

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Charges for 1 hour for Jim = $18

Number of pages typed by Jim in 1 hour = 8

Let x be the number of hours Inna work and let y be the number of hours Jim work.

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We have to minimize this cost.

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Hence, the minimum cost would be 480$ when Inna works for 8 hours and Jim works for 20 hours.

The attached image shows the graph.

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