Answer:
A local maximum of the function f(x) occurs when x =Step-by-step explanation:
Answer:
can you plz send the full image
The 12 in pizza because if you divide the 12 bye 9.99 your answer will be greater than when you divide 14 bye 12.99
28. 5/7(x)=20
X=28
Hope this helps! :)
Answer:
Step-by-step explanation:
Let he speed of the boat on the lake is x.
<u>Considering the speed of the current it will take him:</u>
- 22.5/(x + 6) + 22.5/(x - 6) = 9
- 2.5 / (x + 6) + 2.5 / (x - 6) = 1
- 2.5(x - 6 + x + 6) = (x + 6)(x - 6)
- 2.5*2x = x² - 36
- x² - 5x - 36 = 0
- x = (5 ± √(5² + 4*36))/2 = (5 ± 13) / 2
- x = (5 + 13)/2 = 9 mph (negative root is discarded as the speed should be positive)
