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vitfil [10]
3 years ago
7

Energy is required in order to produce any sound. A. True B. False

Mathematics
1 answer:
Vikki [24]3 years ago
7 0

Answer: a. True

Step-by-step explanation:

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A 45 foot ladder is leaning against a building. If the bottom of the ladder is 27 feet from the base of the building, how tall i
taurus [48]

Answer:

The height of building to the nearest foot is h = 36 foot

Step-by-step explanation:

We have given,

Length of ladder leaning against a building, l = 45 foot

Bottom length between ladder and the building , b = 27

Now, we need to find the height of building to the nearest foot.

Let the height of building be h.

Using Pythagoras theorem,

l^{2} = b^{2} +h^{2}

Here, l = 45 , b = 27 and h =?

So,

45^{2} = 27^{2} +h^{2}

h² = 45² - 27²

h = √(45² - 27²)

h = 36

The height of building to the nearest foot is h = 36 foot

8 0
3 years ago
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Answer: y=4x+8

Step-by-step explanation:

5 0
3 years ago
Pictures of the problem is attached! :)
hjlf

Answer:

Step-by-step explanation:

16 x 28% = 4.48

16 x 72% = 11.52

16 x 172% = 27.52

16 x 128% = 20.48

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I dont know for the second one, sorry-

8 0
3 years ago
which of the following algebraic expression can be used to express the statement three less than z squared
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z^{2}-3
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So
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