2 years ago

1. Grace rode her bike 5 miles in 20 minutes. At this rate, how many miles can she ride her bike in 30 minutes? *

Mathematics

1 answer:

erastova [34]2 years ago

8 0

Answer:

Step-by-step explanation:

add the stuff together

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Seven subtracted from three times a number is -4

Fynjy0 [20]

X - the number

3x - 7 = -4 |add 7 to both sides

3x = 3 |divide both sides by 3

x = 1

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2 years ago

alice rode her bike the same number every day for 17 days she rode a tottle of 68miles during thes 17 days at this rate how mane

s344n2d4d5 [400]

4 miles!

68 divided by 17 = 4

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2 years ago

Read 2 more answers

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

$\frac{210v_{b} }{210} \frac{4200}{210} \\\\v_{b} = 20 mph$

4 0

2 years ago

(5pg)3=125pg. Is wrong or correct

irakobra [83]

Answer:

125 p^3 g^3

Step-by-step explanation:

(5pg)^3

We know that (ab)^c = a^c * b^c

5^3 p^3 g^3

125 p^3 g^3

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2 years ago

What is the sum of the interior angles of the polygon shown below?

Len [333]

Answer:

360

Step-by-step explanation:

Formula

Sides -2 ×180

4-2=2×180=360

3 0

2 years ago