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Lynna [10]
3 years ago
11

If f(x) = 1/3x^2 + 5, find f(-9). A. 248 B. -22 C. 11 D. 32

Mathematics
2 answers:
melamori03 [73]3 years ago
7 0

Answer:

D. 32

Step-by-step explanation:

For this problem, we simply plug -9 in for x in f(x):

f(x)=\frac{1}{3} x^2+5  ⇒  f(9)=\frac{1}{3} *(9^2)+5=\frac{1}{3} *81+5=27+5=32

Thus, the answer is D. 32.

Hope this helps!

anygoal [31]3 years ago
3 0

Answer:

D. 32

Step-by-step explanation:

f(-9) = ⅓(-9)² + 5

⅓(81) + 5

27 + 5

32

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Can someone help me solve this question? It’s similar to the previous ones! Thank you!
luda_lava [24]

Answer:

\boxed{\sf \ \ \ (-2x+-9)(1x+3)=-2x^2-15x-27 \ \ \ }

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Step-by-step explanation:

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