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3 years ago

You know that 125 is a composite number because it is divisible by ___. A. 2 B. 3 C. 5 D. 7

Mathematics

2 answers:

Marina86 [1]3 years ago

6 0

Well, since the last number in 125 is 5, it can't be divided by 2.

125 divided by 3 is 41.6 repeated, which isn't the correct answer.

125 divided by 7 is 17.85714285714286, which isn't a correct answer either.

So.. The answer is C. 5

-Dominant- [34]3 years ago

4 0

The answer is C. 5

This is the answer because

125 / 2 = 62.5

125 / 3 = 41.6_

125 / 5 = 25

125 / 7 = 17.86

As you can see 5 is the only number it can be divisible by.

Hope that helps!!

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Assignment: $\bold{Solve \ Equation: \ 3x^2+15x=18}$

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Answer: $\boxed{\bold{x=1,\:x=-6}}$

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Explanation: $\downarrow\downarrow\downarrow$

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[ Step One ] Subtract 18 From Both Sides

$\bold{3x^2+15x-18=18-18}$

[ Step Two ] Simplify

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$\bold{\frac{-15+\sqrt{15^2-4\cdot \:3\left(-18\right)}}{2\cdot \:3}: \ 1}$

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