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valkas [14]
3 years ago
8

If f ( x ) = − 4 x , what is f ( 2 )

Mathematics
2 answers:
Ray Of Light [21]3 years ago
5 0

Answer:

-8

Step-by-step explanation:

f(2) = -4(2) ----> -8

romanna [79]3 years ago
4 0

Answer:

f(2)= -8

Step-by-step explanation:

f(X)= -4x

or, f(2)= -4×2

or, f(2)= -8

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4x+2y=10 <br> X-y=13 <br> Write in (x,y)
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Answer:

(x = 6, y = -7)

Step-by-step explanation:

Solve the following system:

{4 x + 2 y = 10 | (equation 1)

x - y = 13 | (equation 2)

Subtract 1/4 × (equation 1) from equation 2:

{4 x + 2 y = 10 | (equation 1)

0 x - (3 y)/2 = 21/2 | (equation 2)

Divide equation 1 by 2:

{2 x + y = 5 | (equation 1)

0 x - (3 y)/2 = 21/2 | (equation 2)

Multiply equation 2 by 2/3:

{2 x + y = 5 | (equation 1)

0 x - y = 7 | (equation 2)

Multiply equation 2 by -1:

{2 x + y = 5 | (equation 1)

0 x+y = -7 | (equation 2)

Subtract equation 2 from equation 1:

{2 x+0 y = 12 | (equation 1)

0 x+y = -7 | (equation 2)

Divide equation 1 by 2:

{x+0 y = 6 | (equation 1)

0 x+y = -7 | (equation 2)

Collect results:

Answer:  {x = 6 , y = -7

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3 years ago
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