4 years ago

To convert 75 minutes to hours, you would use the ratio. 1 hour/60 minutes

Mathematics

2 answers:

erica [24]4 years ago

3 0

That is a true statement.

Lana71 [14]4 years ago

3 0

I would say this is A.True.

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D. 1mm/10cm is the correct answer choice.

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If Catherine has 3 more quarters than nickels and they have a combined value of 195 cents, how many of each coin does she have?

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3 years ago

SEE QUESTION IN IMAGE

r-ruslan [8.4K]

d.30

Answer:

Solution given:

x. $\:\:\:$ f. $\:\:\:$ fx

13. $\:\:\:$ 15. $\:\:\:$ 195

14. $\:\:\:$ 42 $\:\:\:$ 588

15. $\:\:\:$ x. $\:\:\:$ 15x

16. $\:\:\:$ 10. $\:\:\:$ 160

17. $\:\:\:$ 3. $\:\:\:$ 51

. n=70+x. $\sum$ =994+15x

we have

mean=sum/n

14.44= $\bold{\frac{\sum}{n}}$

14.44= $\bold{\frac{994+15x}{70+x}}$

doing crisscrossed multiplication

(70+x)*14.44=994+15x

1010.8+14.44x=994+15x

15x-14.44x=1010.8-994

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3 years ago

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