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SIZIF [17.4K]
3 years ago
8

What is the value of f(X)=3x-12 for X=9

Mathematics
1 answer:
Phantasy [73]3 years ago
8 0
F(X)=3x-12 Substitute 9 for x. f (9)=3 (9) -12 Multiply 9 by 3. F (9)= 27 -12 Subtract Final Answer: 15
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Explain how you would subtract -4 - 6 using a number line​
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vovikov84 [41]

9514 1404 393

Answer:

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Step-by-step explanation:

Point E partitions both the x-distance and the y-distance in the ratio 2 : 1. That is, for either the x-coordinates or the y-coordinates, ...

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Try the answers with the x-coordinates.

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The only viable choice is (3, 3).

_____

<em>Alternate solution</em>

For a partitioning of m : n, the desired point is ...

  E = (n×C +m×D)/(m+n)

For partitioning of 2 : 1, the desired point is ...

  E = (1×(-1, -3) + 2×(5, 6))/(2+1) = (-1+10, -3 +12)/3

  E = (3, 3)

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Answer:

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Step-by-step explanation:

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