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Dima020 [189]
3 years ago
15

Question 3 a and b I need help with please

Mathematics
1 answer:
Nookie1986 [14]3 years ago
8 0
For a, assuming that you will be spraying all sides of the cushions, including the side facing down, you need to figure out the total surface area for the cushion. The formula is 2(lw + wh + hl). l = length, w = width, h = height. Once you do that, then you will need to multiply that number by six because there are six cushions. This number will be in sq. centimeters. Next you need to convert the coverage area of the spray from sq meters to sq centimeters ( m = 1000cm). Now you will take your total surface area of the six cushions and divide it by the number of sq. centimeters that one can of spray covers and that will give you the number of cans needed.

For b, you will take the number of sq centimeters per a can and multiply by 10% (.10), then add that number to the original can amount. Now you will take the total surface area of the six cushions and divide it by the 10% more amount you just calculated to find out how many cans are needed. This answer should be a smaller number than the number of cans calculated for answer a.
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Bogdan [553]
11x8=88
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1.5x8=12
12/2=6

88+6+6=100
8 0
3 years ago
The slope of a line is -4 and it’s y-intercept is (0,4) what is the equation of the line that is perpendicular to the first line
Rasek [7]

Original line equation: y=-4x+4

Perpendicular lines have opposite reciprocals, so the slope of the perpendicular line would be 1/4x.

Perpendicular line equation: y=1/4x+b

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Equation of the perpendicular line: y=1/4x+4

Hope this helps! :)

4 0
3 years ago
Subtract six from a number cubed
Shkiper50 [21]

Answer:

2

                                               

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4 0
2 years ago
(30 POINTS COME AND GET IT FOR A MULTIPLE CHOUCE XD) which of the following is the solution for s in the system of equation show
disa [49]

Answer:

  • (4) s = 20

Step-by-step explanation:

<u>Given system:</u>

  • r + 2s = 52
  • 2r - s = 4

Eliminate r to solve for s.

<u>To do so, double the first equation and then subtract the second one:</u>

  • 2r + 4s = 104
  • 2r - s = 4

<u>Subtract</u>

  • 4s - (-s) = 104 - 4
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Correct choice is (4) 20

3 0
3 years ago
Read 2 more answers
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baherus [9]
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P[Wind and Rain ] / P [Rain] =  0.35 / 0.65 = 0.538 = 54%

The answer is A.
3 0
3 years ago
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