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3 years ago

If 90 is in 80% of value,what is that value

Mathematics

2 answers:

babunello [35]3 years ago

7 0

Answer:

112.5

Step-by-step explanation:

$\frac{90}{?} =\frac{80}{100}$

you would then cross multiply. 90 x 100 and 80 x ?

you will then have 9000 = 80?

divide 9000 by 80 and you will get ? = 112.5

♥

BartSMP [9]3 years ago

4 0

Its 112.5 hope this helps. :)

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3 years ago

The professor of a business statistics class wanted to find out the average amount of time per week her students spent studying

zhenek [66]

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3 years ago

Which expression has the same GCF as 15x2 - 21x?

Mice21 [21]

Answer:

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Step-by-step explanation:

We have the following expression:

$15x^2 -21 x$

We can find the GCF with the following steps.

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The factors for 15 are : 1,3,5,15

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And the common factors are 1,3

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2. Find the GCF for the variable

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The factors of x are: x

The common factors are x for this case, so then the GCF for the variable part is x

3. Multiply the two results from steps 1 and 2

GCf= 3*x = 3x

If we consider the new expression:

$15x^2 +21x$

We can find the GCF with the following steps.

1. Find the GCF for the numerical part 15 and -21

The factors for 15 are : 1,3,5,15

The factors for -21 are 1,3,7,21

And the common factors are 1,3

The GCF for the numerical part is 3*1 = 3

2. Find the GCF for the variable

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The common factors are x for this case, so then the GCF for the variable part is x

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natta225 [31]

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