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3 years ago

7

a town had about 2120 acres of pine trees 40 years ago. Only about 13% of the pine trees remain. How many acres of pine trees re

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2 answers:

Alexxx [7]3 years ago

7 0

.13*2120=275.6

x=275.6 acres

DerKrebs [107]3 years ago

6 0

$13/100 = x/2120 \\ 100*x = 13*2120 \\ 100x = 27,560 \\ 100x/100 = 27560/100 \\ x = 275.6$
275.6 acres of pine trees remain.

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Answer:

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Step-by-step explanation:

Step 1 :

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

The sum the the interior angles of a triangle is 180°.

We know that the three angles of the triangle is 100°, x° - 4, and 3x°.

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(I got rid of the degree signs because they are not necessary when finding x.)

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100 + x - 4 + 3x = 180

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3 years ago

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3 years ago

Helppop!!A car and van are driving on a highway. The table shows the amount y (in gallons) of gas in the cars gas tank after dri

Korvikt [17]

Answer:

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Step-by-step explanation:

Given

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Calculate the equation using:

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$m = -\frac{1}{5}$

This implies that for every mile traveled, the van uses 1/5 gallon of gas.

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$y = -\frac{1}{5}x + 31$ --- The van

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Equate both

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Collect like terms

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Solve for x

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5 0

3 years ago