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sukhopar [10]
3 years ago
12

1. You have 23 coins, all quarters and dimes, totaling $4.85. How many of each coin do you have?

Mathematics
1 answer:
Ksju [112]3 years ago
7 0

the answer is this...

.25x+.10y=4.85

x+y=25

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Step-by-step explanation:

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Read 2 more answers
Peter is writing a number in scientific notation.The number is grater that ten million and less that one hundred million.Which e
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Answer:

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Step-by-step explanation:

Let us assume the needed number is M.

Also, given:

The needed number is GREATER than 10 Million.

⇒ M  > 10 Million

⇒ M > 10,000,000

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The needed number is SMALLER than 100 Million.

⇒ M  <  100 Million

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Comparing (1) and (2) we can see that M can have more than 7 zeroes after 1 but LESS than 8 zeroes after 1.

So, the possible values of M can be:

M  =  a \times 10^7  where 1 < a ≤ 9

So, the EXPONENT USED BY PETER is 7 in all the possible cases.

5 0
4 years ago
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