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Inessa05 [86]
3 years ago
5

From the top of a building, the angle of depression to a car on the ground is 52. If the building is 400 ft tall, how far away i

s the car from the base of the building
Mathematics
1 answer:
Sladkaya [172]3 years ago
7 0

Answer:

312.51 ft

Step-by-step explanation:

You would have to do tangent because if you add a triangle it gives you the opposite side length and you are trying to find the adjacent side lengths to the angle. It would look like this:

tan52=400/x

x*tan52=400*x

xtan52=400

xtan52/tan52=400/tan52

x=400/tan52

x=312.51 ft

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Answer:

Step-by-step explanation:Total hours:2 hours

Total distance:120 miles

speed: 120miles/2hours equal to 60miles/hour

3 0
3 years ago
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Kylie starts with $145 in her piggy bank. Each month she adds $20.
djverab [1.8K]

Kylie's first month collection, a1= $ 145

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so for n months collection = an-1+20

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4 years ago
If the exchange rate when converting US Dollars to ZA rands is $1=R17
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Answer:

200 US DOLLARS

Step-by-step explanation:

Given; $1=R17

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5 0
2 years ago
4(5x + 9)^2 – 33 = -21
ozzi

Answer:

x = sqrt(3)/5 - 9/5 or x = -9/5 - sqrt(3)/5

Step-by-step explanation by completing the square:

Solve for x over the real numbers:

4 (5 x + 9)^2 - 33 = -21

Add 33 to both sides:

4 (5 x + 9)^2 = 12

Divide both sides by 4:

(5 x + 9)^2 = 3

Take the square root of both sides:

5 x + 9 = sqrt(3) or 5 x + 9 = -sqrt(3)

Subtract 9 from both sides:

5 x = sqrt(3) - 9 or 5 x + 9 = -sqrt(3)

Divide both sides by 5:

x = sqrt(3)/5 - 9/5 or 5 x + 9 = -sqrt(3)

Subtract 9 from both sides:

x = sqrt(3)/5 - 9/5 or 5 x = -9 - sqrt(3)

Divide both sides by 5:

Answer:  x = sqrt(3)/5 - 9/5 or x = -9/5 - sqrt(3)/5

7 0
4 years ago
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If c=4 and the problem is c to the third power/2 what is the answer?
tiny-mole [99]

c=4\\\frac{c^3}{2}\\\frac{(4)^3}{2}\\\frac{64}{2}\\32

When c = 4 and it is applied to this equation, the answer is 32.

⭐ Answered by Hyperrspace (Ace) ⭐

⭐ Brainliest would be appreciated, I'm trying to reach genius! ⭐

⭐ If you have questions, leave a comment, I'm happy to help! ⭐

6 0
4 years ago
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