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hjlf
3 years ago
9

a ladder leans against the side of a house makes a angle of 60° with the ground. the foot of the ladder is 7 ft from the house.

how long is the ladder

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
7 0
From your knowledge of equilateral triangles, you know that an altitude is also a median. The long side of a 30°-60°-90° triangle is twice the length of the shortest side.

The ladder is 14 ft long.

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Answer:

Step-by-step explanation:

I think you meant y = -2x + 5.

x    y = -2x + 5

0                       5

1      -2(1) + 5 =   3

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Note that every time you increase x by 1, y decreases by 2.

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The sum of the ages of Levi and Monique is 76 years. 8 years ago, Levi's age was 3 times Monique's age. How old is Levi now?
andreev551 [17]

Answer:

Levi is 53 yrs now

Step-by-step explanation:

sum = 76yrs

Levi = 3x -8

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now = 45 + 8

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now = 15 + 8

           23yrs now

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To the nearest foot, it would be 23 feet. I found this using the Pythagorean Theorem of a (squared) + b (squared) = c (squared). If you have 24 as the hypotenuse, you have to square this and subtract 64 (8*8) from it. That will equal 512. So you have to find the square root of that which is 22.62, which will round to 23 feet.
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