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tensa zangetsu [6.8K]
3 years ago
12

If 3x-4+8=12+2x then x=?

Mathematics
1 answer:
vova2212 [387]3 years ago
5 0

Answer:

8

Step-by-step explanation:

Combine like terms, -4 and 8, 2x and 3x.

After combining the terms, you get x+4=12.

Subtract 4 from both sides and get x=8

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Answer:

approximately 56.51 cubic inches

Step-by-step explanation:

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8 0
3 years ago
Find a cubic function with the given zeros. 7, -3, 2
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X = 7, -3, 2
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7 0
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Suppose Ken has 25 coins and nickels and dimes only and has a total of a $1.65 how many of each coin does he have?
nikklg [1K]
x-\ number\ of\ nickels\\
y-\ number\ of\ dimes\\\\
x+y=25 \ \ \ | x=25-y\\
0.05x+0.1y=1.65\\\\
0.05(25-y)+0.1y=1.65\\\\
1.25-0.05y+0.1y=1.65\\\\
1.25+0.05y=1.65\ \ \ | subtract\ 1.25\\\\
0.05y=0.4\ \ \ \ \ | divide\ by\ 0.05\\\\
y=8\\\\
x=25-8=17\\\\
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6 0
3 years ago
If the difference between a number and 21 is divided by2, the result is 4 times the number. What is the number
Ostrovityanka [42]
(n-21)/2=4n is the equation

First, divide what is in the parentheses by 2
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Then, multiply the whole equation by 2 so we have all whole numbers
n-21=8n

Move N so that it is with 8n
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Divide 21 by 7
n=-3

Solution: The number (n) is equal to -3
6 0
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How many $1 dollar bills do i need to circle the earth? Thanks
ozzi
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8 0
3 years ago
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