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andrezito [222]
1 year ago
10

Two train leave stations 210 miles apart at the same time and travel toward each other. One train travels at 80 miles per hour w

hile the other traves a 70miles per hout. How long will it take for the two trains to meet?___ hours Do not do any rounding
Mathematics
1 answer:
Brrunno [24]1 year ago
3 0

SOLUTION

At the same time t,

Train 1 would have covered a distance of 80t, since distance = average speed x time.

Train 2 would have covered a distance of 70t.

Now both added should give 210 miles

That is 80t + 70t = 210

150t = 210

t = 210/150

t = 1.4 hours

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Answer:

Exact form : x=6/5

Decimal form : x=1.2

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Do you mean x/-9=(-4)-(-11)x?

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Answer:

Step-by-step explanation:

let the first angle be 5x

second be 4x

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as we know that by adding all the sides of triangle we get 180°

therefore  ,

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6 0
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Given that (1, 0, 1) is a solution to a system of three linear equations, which of the following is true about the system?
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<h3>Answer:  Choice C) </h3><h3>The system can only be independent and consistent</h3>

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Explanation:

Let's go through the answer choices

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  • B) This is similar to choice A and we cannot have a system be both independent and dependent. Either a system is independent or dependent, but not both. Independence means that the two equations are not tied together, while dependent equations are some multiple of each other. We can rule out choice B.
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If it were me as the teacher, I'd cross out the "independent" part of choice C and simply say the system is consistent.

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