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Ket [755]
3 years ago
7

Help me please I’ll give out brainliest ((Trigonometry))

Mathematics
1 answer:
-Dominant- [34]3 years ago
5 0

Answer:

70.01 ft

Step-by-step explanation:

The angle of depression is 40°, which makes the angle formed by the ground and the line to the tower also 40°.

Since the side opposite of the 40° on the bottom is given, then you can use sine to find how far Ranger Bob is, since the line from him to the tower is the hypotenuse.

Let x = the hypotenuse

sin 40 = 45/x

x = 45/sin 40

x ≈ 70.01 (to the nearest hundredth)

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Danny earns a monthly allowance of twenty dollars and extra seventy five cents every time he is nice to his mom. Avery earns a m
Lerok [7]

Answer:

Danny: y-=.75x+20

Avery: y=1.25x+18

Step-by-step explanation:

To write a system of equations, it usually equals y=mx+b. Since Danny and Avery both earn the set monthly allowance of 20 and 18 dollars respectively, those numbers go on the variable b since it's a set amount and they start off with that amount of money if they weren't nice to their mom at all.

Since we are trying to find the overall amount of money, let y=total money a child earns every month and x=how many times the child is nice to their mother.

The extra .75 cents Danny earns go under the variable m because it is dependent on how many times he is nice to his mom. Along with Avery.

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3 years ago
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liberstina [14]

Answer:

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Step-by-step explanation:

I would say Identitive because it is being multiplied by 1 and this property states that anything multiplied by 1 is itself

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3 years ago
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If n(A) =15 n (B) = 9 n(A∩B) =4 <br> find n(A U B)
Xelga [282]

Answer:

20

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