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3 years ago

12

Charles traveled for 4 hours at 80 miles per hour. He then went 3 more hours at 65 miles per hour. Find the speed fro the entire

journey, rounded to the nearest tenth of a mile(PLEASE SHOW STEPS!!)

1 answer:

Colt1911 [192]3 years ago

7 0

I believe he traveled 41.7 mph the whole trip.

1) divide 80 by 4

2) divide 65 by 3

3) add them together

4) round to nearest tenth

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1 year ago

Trevon and Ming are selling cheesecakes for a school fundraiser. Customers can buy French silk cheesecake and apple cheesecake.

qwelly [4]

The cost of one French silk cheesecake is $5 and one apple cheesecake is $14.

Step-by-step explanation:

Let,

Cost of one French silk cheesecake = x

Cost of one apple cheesecake = y

According to given statement;

8x+y=54 Eqn 1

3x+y=29 Eqn 2

Subtracting Eqn 2 from Eqn 1

$(8x+y)-(3x+y)=54-29\\8x+y-3x-y=25\\5x=25$

Dividing both sides by 5

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Putting x=5 in Eqn 1

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Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago