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OLEGan [10]
2 years ago
13

Scott's gas tank is 1/3 full. After he buys 12 gallons of gas, it is 7/9 full. How many gallons can Scott's tank hold?

Mathematics
1 answer:
Bumek [7]2 years ago
6 0

Answer: We start with the variable "x". Let's call "x" Dan's full tank.

So we know that right now he has 1/3x or 1/3 of a full tank.

After adding 12 gallons, at the end, he has 7/9x, or 7/9 of a full tank

So we start with

(1/3)x + 12 = 7/9x

Let's subtract 1/3x from both sides

12 = 7/9x - 1/3x

Remember, we need to use common denominators to subtract, so 1/3 becomes 3/9

12 = 7/9x - 3/9x

Now we simplify to get

12 = 4/9x

Multiply the reciprocal of 4/9 to both sides which is 9/4

12 * 9/4 = x

Answer is 27 gallons.

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8 0
3 years ago
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4 0
3 years ago
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At store A, 3 pounds of apples cost $12. At store B, the cost is given by y = 2 x where y is the cost in dollars and x is the nu
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Answer:

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3) 3$ per pound. Given a graph with a y scaled by 3, and an x scaled by 1 with a graph y = x or 1 unit up for every unit right. This must be equivalent to y = 3x. Where y is labeled as the cost in dollars, and x as the weight in pounds. So there are 3 dollars for every pound of apples.

4) Store B. Because 2 is less than 3 which is less than 4.

Hope it helps, stay safe and tell me if me wrong! :D

8 0
2 years ago
Please help simplify this equation by combining like terms (3x-5) +(4x+12)
I am Lyosha [343]

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I like to line them up vertically

 (3x-5)

+(4x+12)

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4 0
3 years ago
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I need help with multiple choice plz help no guess
ozzi
I suggest you go to khan acadamey on youtube and look up this topic.


2: 23

3: B



hold on a sec i will keep answering but i wil post this part ill add the rest in the comments





 
7 0
2 years ago
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