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sweet [91]
3 years ago
13

There were some people on a train.

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
6 0

Answer:

62

Step-by-step explanation:

let there be X people in the beginning

so

X-18+21=65

X+3=65

X=65-3

X=62

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Answer:

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3 0
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What is the percent lost ?? Please help
denpristay [2]

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The tables represent two linear functions in a system.<br><br> What is the solution to this system?
Lorico [155]

Answer:

(-14,-54)

Step-by-step explanation:

Convert both lists to point slope form.

y=4x+2\\y=3x-12

Use Substitution

4x+2=3x-12\\x+2=-12\\x=-14

Plug in X to solve for Y

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8 0
3 years ago
The Chang family is on their way home from a cross-country road trip. During the trip, the function D(t)=3260−55t can be used to
nadya68 [22]

Answer:

D(12) = 2,600 miles

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Step-by-step explanation:

To find D(12); all we have to do is to substitute the value of 12 for D

We have this as;

D(12) = 3260-55(12)

D(12) = 2,600

In the context of this problem, what this mean is that the distance away from home is 2,600 miles after traveling 12 hours

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The answer is ± 5<em>i</em>

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