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3 years ago

If y is directly proportional to x and y=5 when x=2, find the value of y when x =7

Mathematics

1 answer:

Amanda [17]3 years ago

3 0

Answer:

y = 17.5

Step-by-step explanation:

y = kx

→ Substitute in the values

5 = 2k

→ Divide both sides by 2 to isolate k

k = 2.5

⇒ y = 2.5x

→ Substitute in x = 7

y = 2.5x ⇔ y = 2.5 × 7 ⇔ y = 17.5

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2 years ago

Jenny owns a salon. She had 150 customers at the end of the third quarter, 151 customers at the beginning of the third quarter,

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There is a 96% customer retention rate for the third quarter.

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Jenny owns a salon.

She had 150 customers at the end of the third quarter, 151 customers at the beginning of the third quarter, and five new customers in the third quarter.

<h3>Customer retention rate</h3>

It determines the percentage of customers that the company has retained over a given period.

The customer retention rate is determined by;

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Hence, there is a 96% customer retention rate for the third quarter.

To know more about customer retention rate click the link given below.

brainly.com/question/25668470

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2 years ago

If y is directly proportional to x and y=5 when x=2, find the value of y when x =7​

If y is directly proportional to x and y=5 when x=2, find the value of y when x =7