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pashok25 [27]
3 years ago
5

Any one can help me please please I need help please each one 3 step explanation

Mathematics
1 answer:
Art [367]3 years ago
3 0

Answer:

a) Area of wall to be painted = 114 sq ft

b) Number of cans required = 2×5 = 10

c) Total cost of paint = $338.43

Step-by-step explanation:

<h2>Part a)</h2>

We are asked to find the area of wall that needs to be painted.

we need to subtract the area of window from the area of wall.

We know that area of a rectangular shape is given by

Area = Width×Length

Area of whole wall = 8×15 = 120 sq ft

Area of window = 2×3 = 6 sq ft

Area of wall to be painted = 120 - 6 = 114 sq ft

<h2>Part b)</h2>

1 can of paint will cover 25 sq ft of area.

So to cover the area of wall to be painted,

114/25 = 4.56

since number of cans cannot be in fraction so we would need 5 cans

Since two coats of paints are needed so

Number of cans required = 2×5 = 10

<h2>Part c)</h2>

1 can of paint costs $29.95

We have total 10 cans

$29.95×10 = $299.5

There is also a 13% tax so the total cost is

$299.5×0.13 = $38.93

Total cost of paint = $299.5 + $38.93

Total cost of paint = $338.43

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Is square root 1 minus sine squared theta = cos Θ true? If so, in which quadrants does angle Θ terminate?
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Answer:

True; quadrants I & IV

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Take square root both sides. When ever we take square root we need to write the solution in plus minus form

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If Θ is in quadrants I and IV then the value will be positive and if Θ is in II and III quadrant then the value is negative.

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Move the terms over and set it equal to zero.

-->>

9x^{2}+12x-12=0

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What multiplies to -12 and adds to 4?

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3 years ago
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