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mars1129 [50]
3 years ago
6

Needs to be written in scientific notation. please help me.

Mathematics
1 answer:
LuckyWell [14K]3 years ago
5 0
5.2 x 10^-3 - 2.58 x 10^-3  Since the exponents on the 10 part is the exact same you can just subtract the number parts

5.2 - 2.58 = 2.62

Add the x 10^-3 back to it and get 2.62 x 10^-3
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Answer:

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Step-by-step explanation:

So what you do is you will have three equations that we will put together.

1. x. The first number is x because they don't give us anything about it.

2. x-5. It says that the second number is 5 less than the first number.

3. 2x. It says that the third number is 2 times the first number.

<em>x+x-5+2x=83. </em>

<em>4x-5=83.</em>

<em>4x=88.</em>

<em>x=22. </em>

That is the first number. To find the second and third, you will plug 22 into the x.

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Step-by-step explanation:

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