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FinnZ [79.3K]
3 years ago
5

brain and jake left their homes, which are 500 miles apart, and drove straight toward each other. it took 4 hours for the two to

meet. if jakes speed was 15 mph slower than brians speed, what was brians speed?
Mathematics
1 answer:
Ket [755]3 years ago
5 0

Let the speed of Brian = X

Brian drove at X miles per hour for 4 hours

Jake drove at X-15 for 4 hours

Set up an equation to get:

4x + 4(x-15) = 500 miles

Simplify:

4x + 4x -60 = 500

8x - 60 = 500

Add 60 to both sides:

8x = 560

Divide both sides by 8:

X = 560/8

X = 70

Brian's speed was x = 70 miles per hour.

Jake's speed was x - 15 = 70-15  = 55 miles per hour.

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horrorfan [7]

Answer:

There are no options, so i will answer in a general way.

In a function:

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The general ordered pair is written as:

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8 0
3 years ago
- Write a recursive formula to represent the sequence below.<br> (3,7, 11, 15, 19,23,27,31,35, ...)
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23 - 19 = 4

27 - 23 = 4

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An arithmetic sequence is a sequence of numbers such that the difference of any two successive members of the sequence is a constant

<em><u>The nth term of arithmetic sequence is given by:</u></em>

a_n =a_1+(n-1)d

a_n = the nᵗʰ term in the sequence

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d = the common difference between terms

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d = 4

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<em><u>Thus the recursive formula to find nth term of sequence is:</u></em>

a_n = 4n - 1 \text{ where } n \geq 1 and n = 1, 2, 3, ......

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