Answer:
168
Step-by-step explanation:
Multiply 21 by 8 so
21 × 8 = 168
Answer:
f'(x) = 2x + 
Step-by-step explanation:
differentiate using the power rule
( a
) = na
Given
f(x) = x² -
+ 9 = x² - 4
+ 9 , then
f'(x) = 2x + 12
= 2x + 
Answer:
Net !
Step-by-step explanation:
net 2 would create a square based pyramid and net 3 would create a triangular base pyramid
Answer:
12
Step-by-step explanation:
Since the two angles are vertical angles, they are congruent and therefore 6x+7=8x-17
2x=24
x=12
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Divide it by 2, since you can make it into a half.