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professor190 [17]
3 years ago
12

Correct Answer Will get Brainliest

Mathematics
2 answers:
astra-53 [7]3 years ago
7 0

Answer:

48.6 minutes

Step-by-step explanation:

First we must identify the area of the given wall :

A = L * W

A = 9 * 9

81 = 9 * 9

81ft^2

Now we know that we can paint 75 square feet every 45 minutes so we must use proportion to find out how long it'll take you.

\frac{75}{45} *\frac{ft^2}{min}

=

\frac{81}{x} \frac{ft^2}{min}

x = 45(81) / 75

x = 3645 / 75

x = 48.6 minutes

Tanya [424]3 years ago
5 0

Answer:48.6

we know that

You can paint 75 square feet of a surface every 45 minutes

so

using proportion  

Find out how long it takes you to paint a surface area of 81 square feet

45(81)/75=48.6

hope this helped and I hope you get a correct answer :D

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