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2 years ago

I NEED HELP!!!

Mathematics

1 answer:

andrey2020 [161]2 years ago

6 0

Answer:

<h2>B. The amount of fuel used was lowest at speeds around 60km/h.</h2>

Step-by-step explanation:

The decreasing part is from (20,13) to (60,6), which gives an average rate of

$r=\frac{6-13}{60-20}=-\frac{7}{40}=-0.175$

Then, we have an increasing part from (60,6) to (120,10), which gives an average rate of

$r=\frac{10-6}{120-60}=\frac{4}{60}=0.067$

Basically, at 60 km/h the fuel used was 6 liters per 100 kilometers. Notice that the other velocities make the car to use more liters per kilometers.

Therefore, the amount of fuel used was lowest at speeds around 60 km/h.

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3 years ago

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lord [1]

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Step-by-step explanation:

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2 years ago

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goblinko [34]

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The total weighted points possible for the class are as follows:

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3 years ago

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Answer:

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Scale used to draw a blueprint of a house :

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Therefore, length of kitchen on blueprint is 4 in.

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2 years ago