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mote1985 [20]
4 years ago
7

Robert was able to travel 292 miles in 4 hours and uses 38 l of gasoline. if gas costs $2.09 per gallon, how much did the trip c

ost robert? (1 gal≈3.785 l).
Mathematics
2 answers:
Butoxors [25]4 years ago
7 0

cost of 1 gallon gas = $2.09

cost of 3.785 litres gas = $2.09 ( 1 gallon = 3.785 litres)

cost of 1 litre gas = 2.09/3.785

cost of 18 litres gas = 2.09/3.785 * 18 = $20.982

babunello [35]4 years ago
5 0

Answer:

Robert´s trip cost $20.98.

Step-by-step explanation:

Robert use 38 liters of gas to make his 292 miles trip. The gallon of gas cost is $2.09. First we have to convert the 38 liters of gas to gallons.

38 liters*\frac{1 gallon}{3.785 liters} =10.04 gallons

Having convert the units, we can calculate how much cost the gas, this is:

10.04gallons*2.09=20.98

Robert´s trip cost $20.98.

The distance and time data is used to confuse.

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Srekar needs to increase the size of the prism below by 2 inches on each side. The original prism has a length of 3, a depth of
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Answer:

a b

Step-by-step explanation:

The options as obtained from the internet.

- the new prism will have a length of 5

- the new prism will have a depth of 4

- the new prism will have a height of 2

- the volume will increase by 6 and each of the 3 dimensions is increased by 2.

- srekar could increase the volume by the same amount by just adding 6 to the height instead of 2 to each side

The volume of a rectangular prism is (length × depth × height)

Originally, length = 3 inches

Depth = 2 inches

Height = 1 inch

Original volume = 3×2×1 = 6 in³

Then, Sreka adds 2 inches to each of the dimensions,

New length = 3+2 = 5 inches

New depth = 2+2 = 4 inches

New height = 1+2 = 3 inches

New volume = (5×4×3) = 60 in³

Taking each of the statements one at a time

Statement 1

the new prism will have a length of 5

True!

Statement 2

the new prism will have a depth of 4

True!

Statement 3

the new prism will have a height of 2

False! New height = 3 inches

Statement 4

the volume will increase by 6 and each of the 3 dimensions is increased by 2.

This is false. The volume increased to 10 folds of its original volume.

Statement 5

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Adding 6 inches to the height,

New height = 1+6 = 7 inches

New volume = 3×2×7 = 42 in³

This statement is false as the new volume from adding 2 inches to each side is 60 in³

Hope this Helps!!!

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