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3 years ago

What is an solution for 63 divided by 21.

Mathematics

2 answers:

Orlov [11]3 years ago

8 0

Answer:

Step-by-step explanation:

63/21 = 3

tangare [24]3 years ago

8 0

Step-by-step explanation:

Simple

63 ÷ 21 = 3

Because 21 x 3 =. 63

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The combustion of one gallon of automobile fuel produces about 5 pounds of carbon (in CO₂). Two autos are making a trip of 600 m

rewona [7]

Answer:

Approximately 50 pounds less carbon (in CO₂) will be produced by the second auto on this trip.

Step-by-step explanation:

We have been given that the combustion of one gallon of automobile fuel produces about 5 pounds of carbon (in CO₂). Two autos are making a trip of 600 miles.

Let us find amount of fuel used by autos by dividing the total distance by their mileage.

$\text{Fuel used by 1st auto}=\frac{\text{ 600 miles}}{\frac{\text{ 20 miles}}{\text{gallon}}}$

$\text{Fuel used by 1st auto}=\frac{\text{ 600 miles}}{\text{ 20 miles}}\times \text{gallon}$

$\text{Fuel used by 1st auto}=30 \text{ gallons}$

$\text{Fuel used by 2nd auto}=\frac{\text{ 600 miles}}{\frac{\text{ 30 miles}}{\text{gallon}}}$

$\text{Fuel used by 2nd auto}=\frac{\text{ 600 miles}}{\text{ 30 miles}}\times \text{gallon}$

$\text{Fuel used by 2nd auto}=20 \text{ gallons}$

Let us find the difference of fuel used by both autos.

$\text{Number of gallons that 2nd auto used less than 1st auto}=30-20$

$\text{Number of gallons that 2nd auto used less than 1st auto}=10$

Since one gallon of automobile fuel produces about 5 pounds of carbon, so 10 gallons of fuel will produces $5\times 10=50$ pounds of carbon.

Since 2nd auto used 10 gallons less than 1st auto, therefore, 2nd auto will produce 50 pounds less carbon than 1st auto.

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3 years ago

What has a foot on each end and in the middle

cricket20 [7]

Is it a yardstick? It has 2 ft of the edges and one ft in the middle.

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3 years ago

Select the correct answer.

garri49 [273]

Answer:

Step-by-step explanation:

C. 28

5 raised to 2nd power is 25 so 25+3=28

7 0

3 years ago

the cost y of red apples can be represented by the equation y=2x where x is the number of pounds of red apples

nekit [7.7K]

So wut is the question?

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3 years ago

Read 2 more answers

Plz help 3 question with explanation

Westkost [7]

Answer:

1. $79.38

2. It's correct.

Step-by-step explanation:

price: $105

discount: 30%

tax: 8%

Calculate 30% of 105 and subtract it from 105

To convert 30% to decimals, divide by 100.

$\frac{30}{100}=0.30$

105-0.30(105)

105-31.50

$73.50

Now calculate 8% of it and add it.

73.50+0.08(73.50)

73.50+5.88

$79.38

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3 years ago