2 1/4 = 1 2/7÷x what is x?

Mathematics

1 answer:

Roman55 [17]3 years ago

8 0

Answer:

x=4/7

Step-by-step explanation:

Change mixed fractions to improper fractions

2 1/4 = 9/4

1 2/7 =9/7

Therefore, we have

9/4=9/7÷x

9/7÷x is 9/7×1/x=9/7x

Then, we have

9/4=9/7x

Cross multipy

9×7x=9×4

63x=36

Make x the subject of the formula, we have

x=36/63

x=4/7

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Factor completely 4x2 16x. 4x(x 4) x(4x 4) 4(x2 4x) Prime.

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Answer:

$4x(x+4)$

Step-by-step explanation:

With the expression $4x^{2} +16x$ , start by looking to see if you can take out any x-values. As you can see, both $4x^{2}$ and $16x$ have an x to the first power. You can factor that out, leaving you with the expression $x(4x+16)$ . Now you look for the largest numerical value that you can take out. Both 4 and 16 are divisible by 4, so you can factor out the number 4, leaving you with the expression $4x(x+4)$ .