Answer:
5/48
Step-by-step explanation:
Answer:
5/48
Step-by-step explanation:
to simplify this we should know the least common fact of the two which would be 48 then divide 240 and 2304 by 48 to get 5/48
Answer:
4 * 10¹⁰
Step-by-step explanation:
The estimate value of 36,591,000,000 is 40,000,000,000.
40,000,000,000 = 4 * 10¹⁰
Answer: 4 * 10¹⁰
serve the ferry operator's needs?
The boat must go 9mph on the lake in order for it to serve the ferry operator's needs
Represent the speed of the boat on the lake or in still water with x
Given that:
The current in a river has a speed of 6 mph.
So, the time taken by the boat each trip are:
The equation that calculates the required time (x) is:
This gives
Expand
Evaluate the like terms
Divide through by 9
Collect like terms
Factorize
Solve for x
x cannot be negative.
So, we have:
Hence, the boat must go 9mph on the lake in order for it to serve the ferry operator's needs
Read more about speed and distance at:
Answer: the speed of the boat on the lake is 9 mph
Step-by-step explanation:
Let x represent the speed of the boat on the lake or in still water.
The speed of the current in a river is 6 mph. This means that if the boat goes upstream against the speed of the current, its total speed would be (x - 6)mph. If the boat goes downstream against the speed of the current, its total speed would be (x + 6)mph.
Time = distance/ speed
Every day, his route takes him 22.5 miles each way against the current and back to his dock, and he needs to make this trip in a total of 9 hours. This means that the time taken to travel upstream is
22.5/(x - 6). The time taken to travel downstream is
22.5/(x + 6)
Since the total time is 9 hours, it means that
22.5/(x - 6) = 22.5/(x + 6)
Cross multiplying, it becomes
22.5(x + 6) + 22.5(x - 6) = 9
Multiplying through by (x + 6)(x - 6), it becomes
22.5(x - 6) + 22.5(x + 6) = 9[(x + 6)(x - 6)]
22.5x - 135 + 22.5x + 135 = 9(x² - 6x + 6x - 36)
22.5x + 22.5x = 9x² - 324
9x² - 45x - 324 = 0
Dividing through by 9, it becomes
x² - 5x - 36 = 0
x² + 4x - 9x - 36 = 0
x(x + 4) - 9(x + 4) = 0
x - 9 = 0 or x + 4 = 0
x = 9 or x = - 4
Since the speed cannot be negative, then x = 9
How many more ice cream cones would it have had to sell during the week to meet its goal?
A. 15
B. 25
C. 35
D. 5
Answer:
15 !
Step-by-step explanation: