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Andrew [12]
3 years ago
11

My mother is 12 years more than twice my age.after 8 years she will be 20 years less than three times my age...find my age and m

y mothers age
i have this equation:
2x+12+8=3x-20
2x+12-12+8-8=3x-20-20
2x+3x=-40
5x/5=-40/5
x=-8
NEED HELP PLS :(
Mathematics
1 answer:
Mnenie [13.5K]3 years ago
4 0
You are correct for the first part, you would be 16 and your Mom would be 44. After 8 years, you would be 24 and your mother would be 52. You solve the second part by adding 8 to 16 which equals 24. Then multiply 24 times 3 which equals 72. Lastly, subtract 20 from 72 to find your mother's new age. Which would be 52.

Hope this helps !

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shutvik [7]

Step-by-step explanation:

x + y = 3 ---------------- eqn 1

y = -6x + 3 ------------- eqn 2

Substitute y for -6x + 3 in equation 1

x + -6x + 3 = 3

x - 6x + 3 = 3

-5x + 3 = 3

Collect like terms

-5x = 3 - 3

-5x = 0

Divide both sides by -5

x = 0

Hope this helped!

5 0
3 years ago
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Step-by-step explanation:

Easy...could also be written as 144/9 or 144 to 9

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Hope this helps. Have a nice day

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2 years ago
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What plus what equals -8 ?
Vinil7 [7]

Answer:

-4+-4

Step-by-step explanation:

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3 years ago
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Arlecino [84]

Answer:  =34

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For example, 3 to the power of -4:

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=0.012346

Step-by-step explanation: the solution is expanded when the base x and exponent n are small enough to fit on the screen. Generally, this feature is available when base x is a positive or negative single digit integer raised to the power of a positive or negative single digit integer. Also, when base x is a positive or negative two digit integer raised to the power of a positive or

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hopefully this is right :/

4 0
3 years ago
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