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avanturin [10]
3 years ago
5

The table shows the number of cell phone towers a company will build as the number of its customers increases. Complete a and b

below.
Cell Phone Towers
Customers​ (thousands)
Towers
3.25
169
4.25
221
5.25
273
7.25
377
a. Is the relationship between number of towers and number of customers​ proportional? Explain. Choose the correct answer below​ and, if​ necessary, fill in the answer box to complete your choice.
A.
Yes. The ratios of towers to customers​ (thousands) are all equivalent to a unit rate of nothing.
B.
No. The ratios of towers to customers are not all equivalent.
Mathematics
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

A.

Step-by-step explanation:

Divide 169 by 3.25 and you get 52.

Divide 221 by 4.25 and you get 52.

Do this for all of the rest, and they will all be 52.

Hope this helps!

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Kay [80]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identity

• 1 + cot²x = csc²x

Consider the left side

csc^{4} x - cot^{4} x

Factorise as a difference of squares

= (csc²x - cot²x)(csc²x + cot²x)

= (1 + cot²x - cot²x)(csc²x + cot²x)

= csc²x + cot²x

= csc²x + csc²x - 1

= 2csc²x - 1 = right side ⇒ verified




8 0
3 years ago
This graph shows a proportional relationship.<br> What is the constant of proportionality?
Vlad1618 [11]

Answer:

3/4

Step-by-step explanation:

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2 years ago
DVDs can be made in a factory in Colorado at the rate of 10 DVDs per $1.50, but the factory costs $100,000 to build. If they mak
12345 [234]

Answer:

1 DVD costs 15 cents.

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i already did this problem in one of my quizzes

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