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2 years ago

10

Carlos is making some observations from the roof of a building. Which angle is the angle of elevation from Carlos to the helicop

ter?

1 answer:

Komok [63]2 years ago

3 0

From the given Image :
mkl is the angel of <span>elevation from Carlos to the helicopter.</span>

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Combine the radicals -2 Square root 13 + 19 Square root 13

Alina [70]

The answer is 6.8383838

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2 years ago

An apartment complex has a floor plan with dimensions shown. To effectively air condition a room, 20 BTU’s are required for ever

kifflom [539]

12,900 BTU's are required to cool the room effectively.

Step-by-step explanation:

Step 1:

We must calculate the area of the entire shape to determine the minimum BTU's required to cool the room effectively.

It is made up of a semi-circle a rectangle, and a trapezoid.

Step 2:

The area of a semi-circle $=\frac{ \pi r^{2} }{2} .$

Here, the diameter is 20 feet so the radius is 10 feet.

The area of the semi-circle $=\frac{ \pi r^{2} }{2} =\frac{ (\pi) (10^{2}) }{2} = 157.079$ square feet.

The area of a rectangle $= (l)(w).$

The length of the rectangle is 22 feet and the width is 20 feet.

The area of a rectangle $= (l)(w) =(22)(20) = 440$ square feet.

The area of a trapezoid $=\frac{a+b}{2} (h).$

Here $a=12, b= 20, h= 3$ .

The area of a trapezoid $=\frac{12+20}{2} (3) = 48$ square feet.

Step 3:

The total area of the floor plan $=157.079+440+48 = 645.079$ square feet.

If 20 BTU's are required for a single square foot,

The number of BTU's for 645.079 square feet $= (645.079)(20)=12,901.58$ BTU's.

Rounding this off, we get 12,900 BTU's required to cool the room effectively.

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2 years ago

Duncan shares 20 percent of all of his sales commissions with his personal assistant. If Duncan earns x dollars in commissions a

grandymaker [24]

Answer:

it b

Step-by-step explanation:

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2 years ago

10x+8=-2 how do you solve this I need help

Salsk061 [2.6K]

<span><span><span>10x</span>+8</span>=<span>−2</span></span>Step 1: Subtract 8 from both sides.<span><span><span><span>10x</span>+8</span>−8</span>=<span><span>−2</span>−8</span></span><span><span>10x</span>=<span>−10</span></span>Step 2: Divide both sides by 10.<span><span><span>10x</span>10</span>=<span><span>−10</span>10</span></span><span>x=<span>−<span>1</span></span></span>

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3 years ago

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Which Multiplication expression is equivalent to -6 + (-6) + (-6)

zubka84 [21]

Answer:

option D

Step-by-step explanation:

-6+(-6)+(-6) = -6-6-6 = -18

So, 3× (-6) = -18

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2 years ago

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