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Alinara [238K]
3 years ago
8

If 20 -x = 15, what is the value of 3x

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
5 0
The answer would be 15


Explanation:
20-x=15
To find ‘x’ subtract the base numbers 20-15=5
And to find ‘3x’ take the answer from the last equation and multiply 3*5=15 so in total your answer would be 15
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Evaluate the expression when x-3<br> 4x2 - 14x + 4
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Answer:

82

Step-by-step explanation:

Evaluate 4 x^2 - 14 x + 4 where x = -3:

4 x^2 - 14 x + 4 = 4×(-3)^2 - -3×14 + 4

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4×9 - 14 (-3) + 4

4×9 = 36:

36 - 14 (-3) + 4

-14 (-3) = 42:

36 + 42 + 4

| 1 |  

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Answer:  82

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2 years ago
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Answer:

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Step-by-step explanation:

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7 0
3 years ago
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Step-by-step explanation:

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3 years ago
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Bad White [126]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
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