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makvit [3.9K]
3 years ago
12

when the sun's angle of elevation is 57°, a building casts a shadow 21 m long. how high is the building?

Mathematics
1 answer:
patriot [66]3 years ago
5 0
Check the picture below.

make sure your calculator is in Degree mode.

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For f(x) = 2x +1 and g(x) = x^2-7, find (f/g) (x)
Rashid [163]
the answer is (f/g)(x) = 2(x^2 - 7) + 1
= 2x^2 - 14 + 1
= 2x^2 - 13
5 0
3 years ago
Need help with tree diagrams
oksian1 [2.3K]
There is a 50% chance.


Explanation:

There is always a 50-50 chance that the coin will land on either heads or tails.
6 0
2 years ago
In the figure, m and n are rays.
blagie [28]

Answer:

A is correct because 1 and 3 are vertical angles.

B is correct because there are 180 degrees in a triangle. 180-65-55 = 60. Angle 2 is vertical to the third angle, so angle 2 equals 60.

C is incorrect because it is an exterior angle. Exterior angles are equal to the sum of the two isolated interior angles. 65 + 55 ≠ 60.

D is correct because 3 is an exterior angle. Exterior angles are equal to the sum of the two isolated interior angles. 65 + 55 = 120.

In review, A, B, and D are correct.

I hope this helps you =)

4 0
3 years ago
Read 2 more answers
Find a whole number x in x/113 so that the ratio is a good estimate for pi
NISA [10]
So the initial question is x / 113 = 3.14 (we're keeping it a smaller decimal for now)

What you should do first is multiply both sides by 113

Your answer should be x = 354.82

Round this up to x = 355. <-- This is why we only used 3.14 at the start

Now check your work:
x / 113 = ?
355 / 113 = 3.14159265358979... which essentially is pi
4 0
3 years ago
Need help please and thank you?!
PilotLPTM [1.2K]

Answer:

3. 50.27 inches squared

4. 113.1 km squared

Step-by-step explanation:

3. A=πr^2

π*16

4. A=πr^2

π*36

Have a good day :)

7 0
2 years ago
Read 2 more answers
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