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2 years ago

A jar contains only dimes and nickels. The total number of coins in the jar is

Mathematics

1 answer:

pogonyaev2 years ago

4 0

Answer:

5 dimes and 10 nickels

Step-by-step explanation:

0.1d + 0.05n = 1

d + n = 15

d + 0.5n = 10

d + n = 15

0.5n = 5

n = 10

d + n = 15

d + 10 = 15

d = 5

Answer: 5 dimes and 10 nickels

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chubhunter [2.5K]

Answer:

Ok, we know that we can write a horizontal translation as:

y' = f(x - A)

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Why is this?

Ok, let's compare:

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and

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3 years ago

last summer, at camp okey-fun-okey, the ratio of the number of boy campers to girl campers was 8:7. If there were a total of 195

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The ration of boy campers to total campers is 8:15, and the ratio of girl campers to total campers is 7:15. Using this information, we can answer this question by setting up proportions.

For boys:

$\frac{8}{15} =\frac{x}{195}$

*Cross multiply*

15x=1560

*Divide both sides by 15*

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There are 169 boy campers.

For girls:

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*Cross multiply*

15x=1365

91=x

There are 91 girl campers.

Hope this helps!!

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See Below

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