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dmitriy555 [2]
3 years ago
10

At the auto parts store, Kerna has three things in her basket: wiper blades for $7.49, air fresheners for $3.29, and an oil filt

er wrench for $6.98. She has $18.00. Kerna wants to know if she will have enough money. Should she estimate the amount or find the exact amount? Explain.
Mathematics
1 answer:
lapo4ka [179]3 years ago
6 0

Answer:

Find the exact amount

Step-by-step explanation:

If she estimates the amount, it's not accurate enough because it may run a little over $18 when she actually has enough.

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Answer:

Area= 5x^2-18x -8

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If the rectangle show one side of length 5 x +2, and another side of length x - 4, then the area of this rectangle (given by the product of the sides' length) is:

Area = (5x+2)\,(x-4)\\Area = 5x^2-20x+2x-8\\Area= 5x^2-18x -8

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Line a and line c are parallel lines that are given as a || c. Then the correct option is C.

<h3>How are parallel straight lines related?</h3>

Parallel lines have the same slope since the slope is like a measure of steepness and since parallel lines are of the same steepness, thus, are of the same slope.

Since the given parallel line has equation y = 2x + 2, thus its slope is 2 and thus, the slope of the needed line is 2 too.

Then we have

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