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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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7-0.3×&gt;4<br>solve for x​
Troyanec [42]

Answer:

x<10

Step-by-step explanation:

Add '-7' to each side of the equation.

7 + -7 + -0.3x = 4 + -7

Combine like terms: 7 + -7 = 0

0 + -0.3x = 4 + -7

-0.3x = 4 + -7

Combine like terms: 4 + -7 = -3

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Divide each side by '-0.3'.

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Simplifying

x = 10

4 0
3 years ago
Two triangles can be formed with the given information. Use the Law of Sines to solve the triangles. C = 71°, a = 27, c = 26
guajiro [1.7K]

We have

SinC/ c  = Sin A / a

Sin 71/ 26 = Sin A / 27

Sin A  = 27 Sin 71 /  26  = about .982

So°

Sin-1(.982)  = A  = 79. 08°

Then angle B = 180 - 71 - 79.08 = 29.92°

And b is given by

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But A could also be an obtuse angle = 180 - 79.08 =  100.92°

So we have

B = 180 - 71 - 100.92 = 8.08°

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8 0
3 years ago
How do you do this please help me
aleksandr82 [10.1K]
Use PEMDAS

first 36-4 = 32
7^2 = 49
(32/16) - 49 is your answer -47
7 0
3 years ago
F equals to 2 f - 20​
ICE Princess25 [194]

Answer:

20

Step-by-step explanation:

f = 2f - 20

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Charles is going campin with his family. His campsites 7/8 miles away. They walk at a steady speed of 1 1/2 mi/hr. How many minu
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3 years ago
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