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dusya [7]
3 years ago
11

The distance that Sarah travels varies directly to how long she drives. She travels 440 miles in 8 hours. 

Mathematics
2 answers:
Vilka [71]3 years ago
7 0

Answer:

d=55t  Sara travels 330 miles

Step-by-step explanation:

We are given that distance, d, Sarah drives varies directly to the time, t. This means

d=k⋅t

for some constant, k. Since Sarah travels 440 miles in 8 hours, we substitute these values into the formula for direct variation to find

440=k⋅8

Dividing by 8 gives k=55, so an equation that relates d and t is

d=55t

Substituting t=6 yields

55(6)=330

So Sarah can travel 330 miles in 6 hours.

lesantik [10]3 years ago
4 0

440/8 will get you how many miles Sarah travel in 1 hour.

But Sarah travels 55 miles in 1 hour.

Sarah can travel 330 miles in 6 hour.

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Simplify completely the quantity 3 times x to the 4th power plus 5 times x to the 2nd power plus 2 times x all over x.
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Answer:

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Step-by-step explanation:

To Simplify:  The quantity 3 times x to the 4th power plus 5 times x to the 2nd power plus 2 times x all over x.

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\frac{3x^4+5x^2+2x}{x}

⇒3x^3+5x+2

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Explanation:

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