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stepladder [879]
3 years ago
5

Can you guys help me with fractions I forgot over the summer. Please explain easily.

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
5 0
So in order to add the fractions together you need to first find a common denominator. For the very first problem you can use 63 as a denominator because 7*9=63. Now for the numerator. So you have 4/7 and 8/9. We just multiplied 7 by 9 so now we need to do that for 4 also. 4*9=36. Now we have 36/63. For 8/9 we multiply 8 by 7 to get 56. Now we have 36/63 + 56/63. Once you add those together you simplify your answer. 
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Answer:

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Step-by-step explanation:

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I need an explanation for the problem 4v2=-12v-9. I don't understand why it factors into 4v+3 and 4v+3
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Answer:

The factors are 2v+3,2v+3.

The factors are not 4v+3,4v+3

Step-by-step explanation:

Equation is 4v^2=-12v-9.

This equation can be written as follows:

4v^2+12v+9=0

Here,

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Therefore,

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3 years ago
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Step-by-step explanation:

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Work: √4 * √2 → 2 * √2 → 2√2

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