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3 years ago

I will give extra points please help

Mathematics

2 answers:

sergij07 [2.7K]3 years ago

7 0

Answer:

Step-by-step explanation:

First you find what is in the parentheses

2+7 =9

9-1 = 8

Then find the exponent because on PEMDAS

2 * 2 = 4

Then divide

8 divided by 4 = 2

2 is your answer

pav-90 [236]3 years ago

4 0

Answer:

Step-by-step explanation:

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Sharon is decreasing the size of a diagram of a leaf that is 30 centimeters long by 10 centimeters wide, if the reduced diagram

sertanlavr [38]

Answer:

12 cm

Step-by-step explanation:

This is a proportionality/similarity problem.

10 cm turned to 4 cm. So by how much has it decreased? In other words, 10 multiplied by WHAT is 4?

$10*x=4\\x=\frac{4}{10}\\x=0.4$

0.4 is also known as the scale factor from the large diagram to the small diagram.

So how much would 30 cm become? It would be 30 multiplied by the scale factor, which is 0.4.

$30*0.4=12$

Hence, the length of the reduced diagram would be 12 cm.

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Ann [662]

Answer: -1/8

Step-by-step explanation:

3/4 + -3/8 + -1/4

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That's 8 so you make an equivalent fraction for all fractions so the denominator is 8.

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Now the expression looks like this:

6/8 + - 3/8 + -4/8

6/8 - 3/8 - 4/8

6/8 - 7/8

-1/8

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