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o-na [289]
3 years ago
8

a circular railroad-crossing sigh has a radius of 15 inches. which measurement is closest to the area of the sigh in square inch

es?
Mathematics
1 answer:
S_A_V [24]3 years ago
4 0

Answer:

30

Step-by-step explanation:

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The building below is shown to scale; for every 1 inch of drawing, it is 5 feet in actual distance. The exterior surface area of
VashaNatasha [74]

Answer:

50,000 square inches

Step-by-step explanation:

1:5 ratio so 250,000/5=50,000

8 0
3 years ago
Find two geometric means between 5 and 135
aniked [119]
Answer:

We are effectively looking for a and b such that 5, a, b, 135 is a geometric sequence.

This sequence has common ratio <span><span>3<span>√<span>1355</span></span></span>=3</span>, hence <span>a=15</span> and <span>b=45</span>

Explanation:

In a geometric sequence, each intermediate term is the geometric mean of the term before it and the term after it.

So we want to find a and b such that 5, a, b, 135 is a geometric sequence.

If the common ratio is r then:

<span><span>a=5r</span><span>b=ar=5<span>r2</span></span><span>135=br=5<span>r3</span></span></span>

Hence <span><span>r3</span>=<span>1355</span>=27</span>, so <span>r=<span>3<span>√27</span></span>=3</span>

Then <span>a=5r=15</span> and <span>b=ar=15⋅3=45</span>


6 0
3 years ago
How many times will 12 go into 6839
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Answer:

56.916... reapeating

7 0
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Plz help with - symmetry-
DIA [1.3K]

Answer:

1.) The correct answer is A.

2.) The correct answer is C.

3.) The correct answer is B.

4.) The correct answer is A.

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Step-by-step explanation:

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