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3 years ago

Find the perimeter of the triangle or rectangle. The sides of each triangle are equal in length. Could you help with 16 and 18?

Mathematics

1 answer:

Whitepunk [10]3 years ago

8 0

16. 9

Since each side are congruent, you set the two sides to each other

7x-12=3x

Subtract 7x from both sides

-12=-4x

Divide -4 from both sides

3=x

3+3+3=9

18. 28

2x-3=3x-10

Add 10 on both sides

2x+7=3x

Subtract 2x on both sides

7=x

7+7+7+7=28

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Answer:

$\$20,400$

Step-by-step explanation:

we know that

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$A=P(1+rt)$

where

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step 1

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in this problem we have

$t=4\ years\\ P=\$18,000\\ A=\$21,600\\r=?$

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step 2

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in this part we have

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substitute in the formula above and solve for P

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3 years ago

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4 years ago

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Answer:

16n=16n or n=1

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5n + 11n = 16n add like terms

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n = 1

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