2 years ago

Carlos has a $20 bill. He wants to buy his mom something for her birthday. He uses part of the

Mathematics

1 answer:

lukranit [14]2 years ago

3 0

Answer:

D) $15.99 +$0.50n> $20

Step-by-step explanation:

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Step-by-step explanation:

Let

$A(-3,1),B(1,1),C(1,-2)$

we know that

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the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the distance AB

$A(-3,1),B(1,1)$

substitute in the formula

$AB=\sqrt{(1-1)^{2}+(1+3)^{2}}$

$AB=\sqrt{(0)^{2}+(4)^{2}}$

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step 2

Find the distance BC

$B(1,1),C(1,-2)$

substitute in the formula

$BC=\sqrt{(-2-1)^{2}+(1-1)^{2}}$

$BC=\sqrt{(-3)^{2}+(0)^{2}}$

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step 3

Find the distance AC

$A(-3,1),C(1,-2)$

substitute in the formula

$AC=\sqrt{(-2-1)^{2}+(1+3)^{2}}$

$AC=\sqrt{(-3)^{2}+(4)^{2}}$

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step 4

Find the perimeter

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substitute the values

$P=4+3+5=12\ units$

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