2 years ago

Use the distance formula to find the perimeter. Round to the nearest tenth.

1 answer:

7 0

Answer:

12.5

Step-by-step explanation:

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seropon [69]

The answer you are going to be looking for with this question is 16.4. Hope this helps you out a little :)

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spin [16.1K]

Answer: a

Step-by-step explanation:

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3 years ago

AnnyKZ [126]

Answer:

11 years old

Step-by-step explanation:

If four brothers have the average age 6, then the sum of their ages is

$4\cdot 6=24$

years.

Let x years be the age of sister. If four brothers and their sister have the average age 7, then

$\dfrac{24+x}{5}=7.$

Multiply this equation by 5:

$24+x=35\Rightarrow x=35-24=11.$

The sister is 11 years old.

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3 years ago

schepotkina [342]

C. The Y value does not change because you are only reflecting over x= lines. After the first, it is (-3.5). Then (7, 5)

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3 years ago