Statistics is not an exact science, meaning that with any answer, there will be variance. This is because the sample size used to obtain values is always smaller than the population being studied.
Answer:
Step-by-step explanation:
Given
Required
Solve
We have:
Collect like terms
So:
7/8
8 times 7= 56
So the answer is 49/56 because to get the 8 to be a 56 we multiplied by 7 and whatever you do to the top you have to do to the bottom.
hope i helped :)
Answer:
The speed of the boat in still water is 18.03 mph.
Step-by-step explanation:
Let's call the speed of the boat in still water and the speed of the current.
When the boat is heading upstream its absolute speed will be .
When the boat is heading downstream its absolute speed will be .
In any case, knowing the absolute speed of the boat (the speed with respect of the land), we can calculate the distance traveled during a given time
(equation 1)
So, when the boat is heading upstream, the equation 1 will be:
(equation 2)
And when the boat is heading downstream, the equation will be:
(equation 3)
Equaling equations 2 and 3 we may find the value of v
(equation 4)
Replacing equation 4 in equation 2:
Then, the speed of the boat in still water is 18.03 mph.
Answer:
Equal
Step-by-step explanation: