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bazaltina [42]
3 years ago
15

What is 3x+2x(x-1)=9x+4

Mathematics
1 answer:
Korvikt [17]3 years ago
5 0
3x+2(x-1)=9x=4
We move all terms to the left:
3x+2(x-1)-(9x)=0
We add all the numbers together, and all the variables
-6x+2(x-1)=0
We multiply parentheses
-6x+2x-2=0
We add all the numbers together, and all the variables
-4x-2=0
We move all terms containing x to the left, all other terms to the right
-4x=2
x=2/-4
x=-1/2
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Step-by-step explanation:

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It is given that the time remaining in first tank is given by the equation y = -10x + 80. We can get the total water in the tank by substituting x = 0 in the equation. The total volume of water in first tank is 80 litres.

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As per the given table for the second tank, 60 litres of water remains when x =0. So the total volume of water in the second tank = 60 litres.

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Step 5:

The initial volume of water in first tank is higher. The water in  second tank decreases at a faster rate than the first tank.

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