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____ [38]
3 years ago
12

Lacey is thinking of a number. Her number is a factor of 30, and a composite number. Which of these could be Lacey's number?

Mathematics
1 answer:
Alex3 years ago
6 0

Answer:

(A)30

(D)15

Step-by-step explanation:

Factors of 30 are 1,2,3,5,6,10,15 and 30

A composite number is any number that is not prime.

From the given options, the factors of 30 are 30, 5 and 15.

However, <u>5 is not a composite number.</u>

Therefore, the number that Lacey could be thinking of will either be 30 or 15.

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Answer:

A. He will have to work 40 hours to buy the headphones

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He can work anywhere between 118 and 196 hours.

Step-by-step explanation:

A. Divide 399.95 by 10.25 to get 39.01 hours. But since you cant work 0.01 of an hour, you have to round up to the next hour

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To solve, I made 10.25x = 1200, and x equaled 117.07, which rounds up to 118 hours because you cant work a 0.07 of an hour. 118 hours is the low number of the spectrum.

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........................................................................................

Step-by-step explanation:

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