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3 years ago

Berto has $12 to put gas in his car. If gas costs $3.75 per gallon, which ordered pair relating number of gallons of

Mathematics

2 answers:

Katen [24]3 years ago

7 0

Answer:

(3.2, 12)

Step-by-step explanation:

Total cost for gas = $12

Cost per gallon = $3.75

Letting total cost of gas be y and number of gallons be x, maximum number of gallons of gas he can buy would be ;

Total cost of gas/ cost per gallon = 12 / 3.75 = 3.2 gallons

Therefore , the coordinate pair (x, y) = (3.2, 12)

Natasha_Volkova [10]3 years ago

6 0

Answer:

The answer is (3.2,12)

Step-by-step explanation:

The answers that go in the blanks are (3.2,12).

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HELP MEE IM DIEING please i need help I'm very stupid and idk these things and if u could explain to me how I can add fractions

Dafna1 [17]

Fraction adding: Okay, so if you have two fractions with the same denominator like 2/3 and 1/3 then they are easily added. Just add the numerators together and then keep the denominator. Like this: 2/3 + 1/3 = 3/3 or 1 whole. Here is something for fractions with unlike denominators.

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4 years ago

Problem PageQuestion Working together, two pumps can drain a certain pool in hours. If it takes the older pump hours to drain th

gizmo_the_mogwai [7]

Answer:

10.5 hours.

Step-by-step explanation:

Please consider the complete question.

Working together, two pumps can drain a certain pool in 6 hours. If it takes the older pump 14 hours to drain the pool by itself, how long will it take the newer pump to drain the pool on its own?

Let t represent time taken by newer pump in hours to drain the pool on its own.

So part of pool drained by newer pump in one hour would be $\frac{1}{t}$ .

We have been given that it takes the older pump 14 hours to drain the pool by itself, so part of pool drained by older pump in one hour would be $\frac{1}{14}$ .

Part of pool drained by both pumps working together in one hour would be $\frac{1}{6}$ .

Now, we will equate the sum of part of pool emptied by both pumps with $\frac{1}{6}$ and solve for t as:

$\frac{1}{14}+\frac{1}{t}=\frac{1}{6}$

$\frac{1}{14}\times 42t+\frac{1}{t}\times 42t=\frac{1}{6}\times 42t$

$3t+42=7t$

$7t=3t+42$

$7t-3t=3t-3t+42$

$4t=42$

$\frac{4t}{4}=\frac{42}{4}$

$t=10.5$

Therefore, it will take 10.5 hours for the newer pump to drain the pool on its own.

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3 years ago

The graph of y = –0.2x2 is _____ the graph of y = x2.

zavuch27 [327]

To solve this completion exercise you must apply the proccedure shown below:

1. You have the first function:

y=-0.2x²

When you give different values to "x" and plot it as it is shown in the graph attached, you obtain a parabola.

2. Now, you have the second function:

y=x²

When you give different values to "x" and plot it as it is shown in the graph attached, you obtain a parabola.

3. When you see the two graphs attached, you can conclude the the answer is the option D):

D. Wider than and opens in the opposite direction