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2 years ago

Find the perimeter of a trapezoid with sides that measure 13.1 inches, 5.8 inches, 5.4 inches and 16 inches.

2 answers:

7 0

Hey there! :D

The perimeter is all the sides added up, so:

We know that the trapezoid already has 4 sides, so we have all the measures and can add them together.

13.1+5.8+5.4+16= 40.3

So, the perimeter (all the sides added up) is 40.3 inches.

I hope this helps!
~kaikers

Zigmanuir [339]2 years ago

6 0

A trapezoid has 4 sides. You have everything you need, just add them together. The perimeter of this trapezoid is 40.3 inches or 3.358 feet.

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2 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

GalinKa [24]

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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2 years ago