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sattari [20]
3 years ago
15

Simplify the following fractions using ur magic number. (*2,3,5,7,11,13*)

Mathematics
1 answer:
pshichka [43]3 years ago
4 0

1) 6/14  divide by 2 =        3/7

2) 9/12 divide by 3 =         3/4

3) 15/25 divide by 5 =        3/5

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Sam has $2.25 in quarters and dimes, and the total number of coins is 12. How many quarters and how many dimes?
a_sh-v [17]
N₁*$0.10 + n₂*$0.25 = $2.25

n₁ + n₂ = 12

-----------

This means that:

n₁ = 12 - n₂

And:

(12 - n₂)*$0.10 + n₂*$0.25 = $2.25

12*$0.10 - n₂*$0.10 + n₂*$0.25 = $2.25

$1.20 + n₂*$0.05*(5-2) = $2.25

$1.20 + n₂*$0.05*3 = $2.25

$1.20 + n₂*$0.15 = $2.25

n₂*$0.15 = $2.25 - $1.20

n₂*$0.15 = $1.05

n₂ = ($1.05)/($0.15)

n₂ = 7

If n₂ = 7:

n₁ + 7 = 12

Therefore, n₁ = 5.

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Answer:

5 dimes and 7 quarters.
8 0
3 years ago
Read 2 more answers
2. Which equation is equivalent to x+8 = 21?
lakkis [162]

Answer:

The most obvious one i can think of would be

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What is the first step to verify that the following identity is true?
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Step-by-step explanation:

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katovenus [111]
Step 1) Convert $25 to a decimal:

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Step 2) Multiply that by the amount the sandals cost.

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Step 3) Subtract from the amount you last got.

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And there we have it! Our answer came out to $33.75.
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3 0
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dezoksy [38]

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