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nevsk [136]
3 years ago
11

Sam is doing his math homework. Hey completes 10 probelms every 30 minutes. How many porbelms can sam complete in 60 minutes?

Mathematics
2 answers:
svp [43]3 years ago
8 0
Put the ratios into fraction form. Since you do not know how many problems, replace it with an unknown number a.k.a. a variable. 

10/30 = x/60

Since you can get 30 to 60 by multiplying by 2, multiply everything on the left side by 2.

Then, you get 20/60, which means 20 = x. So, he can complete 20 minutes an hour.
Karolina [17]3 years ago
4 0
He can complete 20 problems in 60 minutes
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3 years ago
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Someone please help me with this question
yan [13]
14 trout out of 50 total fish. The total amount of fish in the lake is 7500. Let’s make this into a proportion.

14/50=x/7500

x represents how much trout is in the lake, we don’t know yet, but we’ll find out.

First, cross multiply.

14*7500=105000
50*x=50x

Now let’s turn this into an equation.

50x=105000
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3 years ago
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2 years ago
If the value of n nickels plus d dimes is c cents, what is n in terms of d and c?
uysha [10]

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8 0
2 years ago
How do you use the order of operations to simplify expressions with exponents
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