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cestrela7 [59]
3 years ago
12

A truck is rented at $40 per day plus a charge per mile of use. The truck traveled 15 miles in one day, and the total charge was

$115. Which equation can be used to find the charge x, in dollars, per mile traveled? 40x + 15 = 115 40 + 15x = 115 40x + 15x = 115 40 + 15 = 115x
Mathematics
2 answers:
Sever21 [200]3 years ago
6 0
The equation you will use would be <span>40x + 15x =115 </span>


iVinArrow [24]3 years ago
3 0

Answer:

40+15x= 115

Step-by-step explanation:

A truck is rented at $40 per day plus a charge per mile of use. The truck traveled 15 miles in one day, and the total charge was $115.

Let x be the charge per mile of use (dollar per mile)

The truck traveled 15 miles in one day. the charge for 15 miles is 15x

A truck is rented at $40 per day

So charge is 15x+ 40

total charge was 115

So the equation becomes

40+15x= 115

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3 years ago
Element X decays radioactively with a half life of 12 minutes. If there are 200 grams of Element X, how long, to the nearest ten
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Answer:

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Step-by-step explanation:

The equation for the amount of the element present, after t minutes, is:

Q(t) = Q(0)e^{-rt}

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This means that Q(12) = 0.5Q(0)

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If there are 200 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 50 grams?

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6 0
3 years ago
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