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4 years ago

A train traveled 217 miles at an average speed of 62mph. for how many hours did the train travel

Mathematics

1 answer:

Natasha2012 [34]4 years ago

8 0

Well, 217 miles ÷ 62 MPH is 3.5.
so it took the train 3.5 hours.

check it: 62 MPH x 3.5 hours, it went 217 miles

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What is 4/5 out of 60

CaHeK987 [17]

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3 years ago

This is so confusing all of it makes no sense

Tom [10]

Answer:

D). $4\sqrt{2}$

Step-by-step explanation:

STEP 1a: Find the last angle of the triangle. ( which is angle A)

$A+90+45=180$

STEP 1b: Solve the equation for A by adding 90 and 45.

$A+135=180$

STEP 1c: Then Move all terms not containing A to the right side of the equation by subtracting 135 from both sides of the equation

$A=180-135$

STEP 1d: Subtract 135 from 180.

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STEP 2a: Find side b next.

STEP 2b: The cosine of an angle is equal to the ratio of the adjacent side to the hypotenuse.

$cos(A)=\frac{adj}{hyp}$

STEP 2c: Substitute the name of each side into the definition of the cosine function.

$cos(A)=\frac{b}{c}$

STEP 2d: Set up the equation to solve for the adjacent side, in this case b.

$b=c*cos(A)$

STEP 2e: Substitute the values of each variable into the formula for cosine.

$b=8*cos(45)$

STEP 2f: Cancel the common factor of 2.

$a=4\sqrt{2}$

HOPE THIS HELPS!

4 0

3 years ago

Read 2 more answers

Your cell phone plan is by the minute. each minute of use cost $0.10. create a relation that represents the amount spent, A, per

Dmitriy789 [7]

Answer:

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Step-by-step explanation:

Since your cell phone plan is by the minute, and each minute of use cost $ 0.10, to create a relation that represents the amount spent, A, per minute, m, of call time, and then use the relation to find the amount spent if you talk 65 minutes, the following calculations must be performed:

0.10 x M = A

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Thus, talking 65 minutes, $ 6.50 must be paid.

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3 years ago

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MAVERICK [17]

No
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3 years ago

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klio [65]

Answer:

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Step-by-step explanation:

Given : A scientist conducted an experiment. Due to chemical reaction, the temperature of a compound rose $\frac{1}{10}$ degree every $\frac{1}{4}$ hour for a limited time.