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3 years ago

The gas tank if your car is 40%, there are 8 gallons of gas in the tank, what is the capacity of the gas tank?

Mathematics

2 answers:

matrenka [14]3 years ago

8 0

The car holds 20 gallons of gas.
40%=8
20%=1/2 of 40%
4=1/2 of 8
so 40+40+20=100
8+8+4=20
100%=20 gallons

Tju [1.3M]3 years ago

5 0

40 divided by 8 is 5. Each gallon equals five percent. There are twenty fragments of five percent in 100 percent. The answer is 20 gallons.

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olasank [31]

Answer:

See below:

Step-by-step explanation:

Hello! I hope you are having a nice day.

We can solve this equation in a single step, we just need a bit of theory and a graph.

We can first see that its in $y=mx+b$ form. Which is also known as Slope-Intercept form.

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$b$ is the y coordinate of the y intercept.
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Now that we've gotten that, we can start graphing.

The y intercept is -7 so we can plot (0,-7) as one of our points.

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Cheers!

6 0

2 years ago

Read 2 more answers

A certain forest covers an area of 4800km^2. suppose that each year this area decreases by 5% What will the area be after 5 year

mixas84 [53]

Answer:

18766224

Step-by-step explanation:

6 0

3 years ago

The length of a rectangular plot is 6m less than thrice its breath. Find the dimensions of the plot if its perimeter is 148m.

Elena-2011 [213]

length of a rectangle is 6 less than 3 times its width"

L = 3W-6

"perimeter of the rectangle is 148 meters"

2L + 2W = 148

L + W = 74

(3W-6) + W = 74

4W = 80

W = 20 m

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3 years ago

Find the maxmium area of a rectangular plot of land which can be enclosed by rope of length 60 metres

mario62 [17]

Answer:

225 m²

Step-by-step explanation:

If W is the width of the rectangle, and L is the length, then:

60 = 2W + 2L

A = WL

Use the first equation to solve for one of the variables:

30 = W + L

L = 30 − W

Substitute into the second equation:

A = W (30 − W)

A = 30W − W²

This is a parabola, so we can find the vertex using the formula x = -b/(2a).

W = -30 / (2 × -1)

W = 15

Or, we can use calculus:

dA/dW = 30 − 2W

0 = 30 − 2W

W = 15

Solving for L:

L = 30 − W

L = 15

So the maximum area is:

A = WL

A = (15)(15)

A = 225

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Answer:

Step-by-step explanation:

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