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3 years ago

6

A house painter finds that he needs 20 minutes to set up his equipment before painting and then 5 minutes for every square foot

that he paints. How many hours will he need to allow to paint an 800 square foot area?

1 answer:

garri49 [273]3 years ago

8 0

To answer this question you need to add 20 minutes to 5 times 800, which equals 4020, then you divide 4020 by 60 and your answer is 67!

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svlad2 [7]

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3 years ago

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ollegr [7]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Write the equation of a line that is perpendicular to x=3x=3x, equals, 3 and that passes through the point (0,-4)(0,−4)left pare

leva [86]

Answer: $x+3y=12$

Step-by-step explanation:

Slope of two lines that are perpendicular to each other is 1.

If one line is $y=3x$ , then its slope = 3 [by comparing to the linear equation y= mx+c, here m=3]

Let n be the slope of the required line, then

$n\times3=-1\\\\\rightarrow\ n=\dfrac{-1}{3}$

Equation of line with slope n and passers through (a,b) is

$(y-b)=n(x-a)$

Equation of line with slope n= $\dfrac{-1}{3}$ and passes through point ( 0,-4) :

$(y-(-4))=\dfrac{-1}{3}(x-0)\\\\\Rightarrow\ y+4=\dfrac{-1}{3}x\\\\\Rightarrow\ -3(y+4)=x\\\\\Rightarrow-3y-12=x\\\\\Rightarrow x+3y=12$

Hence, Required equation : $x+3y=12$

8 0

3 years ago

7y - 8y - 28 = -14

Pachacha [2.7K]

Answer:

y = -14

Step-by-step explanation:

7y - 8y - 28 = -14

- y = -14 + 28

- y = 14

y = -14

hope it helps!

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3 years ago

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Which expression best estimates. -18 1/4 ÷ 2 2/3 A. 18÷3 B. -18÷3 C.-18÷(-3) D. 18÷(-3)

Volgvan

Answer:

the amswer is d hope this helps

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3 years ago