MATHEMATICS MIDDLE SCHOOL

PLZ HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! If f(x) = 3x2 - 2x + 5, find f(-2).

Answers

Answer 1

Answer:

Hello from MrBillDoesMath!

Answer:

Discussion:

f(x) = 3x2 - 2x + 5

Substitute x = -2 in f(x) above to get

f(-2) =

3 (-2)^2 - 2(-2) + 5 = => (-2)^2 = (-2) * (-2) = +4, -2(-2) + + 4

3*4 + 4 + 5 =

12 + 4 + 5 =

Thank you,

MrB

Answer 2

Answer: The answer is 21. hope this helps!

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What is 28- 12.5% decrease???

Answers

ok so I assume
28 and decreased by 12.5%

percent means partst out of 100 so
12.5%=12.5/100=0.125
first find 12.5% of 28 then subtract
0.125 times 28=3.5
decrease
28-3.5=24.5

answer is 24.5

What is the length of a side of a cube with volume 729 cm3

Answers

solution:
v = l x w x h
all cube sides are equal:
v = length^3
given v = 729 cm3
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Answers

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