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Alekssandra [29.7K]
2 years ago
8

A train travels 146 miles in 2 hours. At this rate, how many miles will it travel in 3.5 hours?​

Mathematics
2 answers:
Svetllana [295]2 years ago
7 0

Answer:

255.5 miles

Step-by-step explanation:

146 miles - 2 hours

x miles - 3.5 hours

Cross multiply

2x = 146 x 3.5

2x = 511

Divide both sides by 2

x = 511/2

x = 255.5 miles

RideAnS [48]2 years ago
7 0

Answer:

255.5 Miles

Step-by-step explanation:

2 Hours= 146

1 Hour= 73

Half an hour=36.5

3.5 hours= 255.5

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2 years ago
Can someone help idk if this is right
navik [9.2K]

Answer:

a_n=-3 \cdot a_{n-1}

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You gave the explicit form.

Step-by-step explanation:

You gave the explicit form.

The recursive form is giving you a term in terms of previous terms of the sequence.

So the recursive form of a geometric sequence is a_n=r \cdot a_{n-1} and they also give a term of the sequence; like first term is such and such number. All this says is to get a term in the sequence you just multiply previous term by the common ratio.

r is the common ratio and can found by choosing a term and dividing by the term that is right before it.

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-54/18

18/-6

-6/2

If these quotients didn't match, then it wouldn't be geometric.

Anyways the recursive form for this geometric sequence is

a_n=-3 \cdot a_{n-1}

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5 0
3 years ago
Please help!! Use cube root to solve. Will give brainliest!!
marissa [1.9K]

Answer: x=-17

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4 0
2 years ago
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