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3 years ago

How is y=-2x a linear equation?

Mathematics

1 answer:

e-lub [12.9K]3 years ago

3 0

Because it lowers by the same amount each time.

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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.

8 0

2 years ago

0.54 0.378<br> 0.54 divided by 0.378

Novay_Z [31]

If it’s to the nearest tenth it’s 1.4 if it’s the nearest hundredth 1.42

3 0

3 years ago

You go to a shoe store planning to buy a new pair of the latest Yeezy drop. A pair is selling around for $250. However you have

musickatia [10]

Answer:

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

the school decides to raise prices of lunches. The old price for a lunch was $0.75 . Seth buys the school lunch 5 days a week. w

Elina [12.6K]

Answer:

5*0.75= 3.75 he'll spend $3.75 on lunch every week.

Step-by-step explanation:

5 0

2 years ago

Find the distance bewtween the points (3,3) and (-1,-2)

Otrada [13]

Answer:

$\sqrt{41}$

Step-by-step explanation:

$\sqrt{(3-(-1))^2+(3-(-2))^2}=\sqrt{16+25}=\sqrt{41}$

Hope this helps!

6 0

2 years ago