2 years ago

Find Use proportion 24 =18/15 21 b 18 20 16

Mathematics

1 answer:

stealth61 [152]2 years ago

5 0

Answer:

Step-by-step explanation:

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What is the slope of the line passing through the points (0,0),(1/3,7/3)?

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(0,0)(1/3,7/3)

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3 years ago

Train a is traveling at 30 mph faster than train b. If train a travels 350 miles in the same amount of time that train b travels

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Answer:

20 mph

Step-by-step explanation:

Let speed of Train a = Va mph

Let speed of Train b = Vb mph

Va = Vb + 30

Let time taken for Train a = Ta

Let time taken for Train b = Tb

time taken = distance travelled/speed

Ta = 350/Va = 350/(Vb+30)

Tb = 140/Vb

But they both travel in the same amount of time.

So, Ta = Tb

$\frac{350}{v_{b} + 30}=\frac{140}{v_{b}}$

Cross multiply

$350v_{b} = 140(v_{b} + 30)\\\\350v_{b} = 140v_{b} + 4200\\\\350v_{b} -140v_{b} = 4200\\\\210v_{b} = 4200$

Divide both sides by 210

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3 years ago

TO ANYONE WHO WILL HELP ME..

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Answer:

there isn't a math question

Step-by-step explanation:

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