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cestrela7 [59]
4 years ago
15

Luke is going to repaint both sides of the door of his room. The door is 36 inches long by 80 inches high. His options at the pa

int store are below. 1 gallon of paint costs $10 and covers 4,400 square inches of area. 12 gallon of paint costs $7 and covers 2,200 square inches of area. If the door requires 2 coats of paint, what is the minimum cost of painting the door of Luke's room?
Mathematics
1 answer:
earnstyle [38]4 years ago
8 0
$26.20 minimum cost of option 1
$36.68 minimum cost of option 2

Area₁ = Length x Width
A₁ = 80 x 36
A₁ = 2880 in²  * this in only one side of the door.

Total Area = A₁ x 2 sides = 2880 = 5760 in²  * only good for 1 coating of paint
Total Area to be coated = 5760 x 2 coats of paint = 11,520 in²

1st option - $10 / gallon  and 4400 sq. in.
2nd option - $ 7 / gallon and  2200 sq. in

11,520 / 4400 = 2.62 x $10 = $26.20 minimum cost of option 1
11,520 / 2200 = 5.24 x $  7 = $36.68 minimum cost of option 2

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Answer:

A = -5/4

Step-by-step explanation:

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The line is negative, so the slope will be negative too.

Given the two points, the vertical count is 5 while the horizontal count is 4.

Since slope = rise/run, and the line is negative, the slope is -5/4

8 0
3 years ago
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B.



Let's simply look at each conjecture and determine if it's true or false.



A. 2n– 1 is odd if n is positive: Since n is an integer, 2n will always be even. And an even number minus 1 is always odd. Doesn't matter if n is positive or not. So this conjecture is true.



B. 2n– 1 is always even: Once again, 2n will always be even. So 2n-1 will always be odd. This conjecture is false.



C. 2n– 1 is odd if n is even: 2n is always even, so 2n-1 will always be odd, regardless of what n is. So this conjecture is true.



D. 2n– 1 is always odd: 2n will always be even. So 2n-1 will always be odd. Once again, this conjecture is true.



Of the 4 conjectures above, only conjecture B is false. So the answer is B.
6 0
3 years ago
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If u tell me the solution's like are u evaluating or what, which method is it i can tell u the answer  <span />
3 0
3 years ago
Brandon picked 14 of a pound of cherries. That afternoon, Brandon's brother ate 12 of the cherries. How many pounds of cherries
stellarik [79]

Answer:

2

Step-by-step explanation:

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well,

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