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)
Answer:
During the winter clearance sale, The Cyclery has marked down all bicycles
20 percent and all accessories 25 percent. You purchase a 26-inch 10-speed bike
that regularly sells for $399.95, a chain and lock that regularly sell for
Step-by-step explanation:
hope it helps
Answer:
Each answer correct is 5 points so Doug got 40 points.
Step-by-step explanation:
0.43 is greater because you need 7 to get to 0.5 unlike 0.42 where you need 8
Range is the highest value minus the lowest value
