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irina1246 [14]
3 years ago
10

PLEASE HELP ME!!

Mathematics
1 answer:
tatiyna3 years ago
3 0
For
y=ax²+bx+c
the x value of the axis of symmetry is -b/(2a)

so test them

A., -b/(2a)=-(-8)/(2*-2)=8/-4=-2, yep
B. -b/(2a)=-2/(2*1/2)=-2/1=-2, yep
C. -b/(2a)=-(-16)/(2*4)=16/8=2, nope, need -2
D. -b/(2a)=-12/(2*3)=-12/6=-2, yep

answer is C
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kodGreya [7K]

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3/4+x=6 1/2

Explanation:

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4 0
3 years ago
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NNADVOKAT [17]

Answer:

-8

Step-by-step explanation:

Solving for r means that we need to isolate r from the expression.

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Multiply both sides by (r +6) to 'get rid' of the fraction:

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Expand:

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Minus 24 on both sides:

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Additional:

For a similar question on solving for a variable:

  • brainly.com/question/2594136?utm_source=android&utm_medium=share&utm_campaign=question

8 0
2 years ago
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