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erica [24]
3 years ago
11

A​ person's car uses 6 gal of gasoline to travel 132 mi. He has 5 gal of gasoline in the​ car, and he wants to know how much mor

e gasoline he will need to drive 400 mi. If we assume that the car continues to use gasoline at the same​ rate, how many more gallons will he​ need?
Mathematics
1 answer:
Anna35 [415]3 years ago
4 0
He will need 450 mi.
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The area of a rectangle is found by A = l*w. Since the length here is 2 more than the width or 2 + w and the width is w, substitute these values and A = 288 to solve for w.

A = l*w\\288 = w(2+w)\\288 = w^2 + 2w

To solve for w, move 288 to the other side by subtraction. Then factor and solve.

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Set each factor equal to 0 and solve.

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Since w is a side length and length/distance cannot be negative, then w = 16 is the width of the rectangle.

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