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andrew-mc [135]
3 years ago
12

7/8, 3/10 whats the common denominator

Mathematics
2 answers:
Andreyy893 years ago
7 0
The common denominator would be (40) because 8 can go into 40 and 10 can go into 40
Ivahew [28]3 years ago
3 0
The common denominator is 40.

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Bess has $2.80 in quarters and dimes. The number of dimes is 7 less than the number of quarters. Find the number of quarters and
Nezavi [6.7K]

Answer:

3 dimes and 10 quarters

Step-by-step explanation:

If you add 7 dimes, then the number of dimes and quarters is the same, and the total increases to $3.50. A dime and a quarter have a value together of $0.35. Since there are equal numbers, the value $3.50 must be made up of some quantity of groups with a value of $0.35. That number of groups must be ...

... $3.50/$0.35 = 10

Thus, there are 10 quarters and 10-7 = 3 dimes.

_____

<em>Using an equation</em>

Let q represent the number of quarters. Then the amount Bess has is ...

... 0.10(q -7) +0.25q = 2.80

... 0.35q - 0.70 = 2.80

... 0.35q = 3.50 . . . . . add 0.70 . . . . . . . this should look familiar

... q = 3.50/0.35 = 10

4 0
3 years ago
Can someone say what 45-49 is with regrouping? thanks!
muminat

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
How do you simplify 12+3(8+x)
nadya68 [22]
<span>12+3(8+x)
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3 0
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The answer is 375 because you need to do this:

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5 0
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salantis [7]
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3 years ago
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