Answer:
16 MPH boat speed still water
5 MPH current speed
Step-by-step explanation:
84/4 - x = 55/5 + x
x = (84/4-55/5)/2 = 5 mph current speed in MPH
11+5 = 16 is boat speed in MPH
21 MPH downstream, 11 MPH upstream
Point estimate = x/sample size = 4200/8000 = 0.525 = 52.5%
If the same percentage of the population as that of the sample enjoyed the movie, then;
Prediction of those who enjoyed the movie is calculated from the same percentage. That is;
Total number of the people who enjoyed movie = 52.5% of 500,000 = 0.525*500,000 = 262,500
Whole circle = 360⁰ and 100%.
360⁰ ------ 100%
x ------------- 20%
x= 360*20/100 =72⁰
Answer C. 72⁰.
Answer:
You already have what you are going to substitute, just put the y values from the first equation into the second! Like this:
6x - 5(-2x - 9) = -19
Multiply it out:
6x +10x +45 = -19
Add like terms + simplify:
16x + 45 = -19
16x = -64
x = -4
take that x and put it back into the first equation!!
y = -2(-4) -9
y= 8-9
y= -1
so... your answer is (-4, -1)
hope this helps!
after 6 hours Al and Ben will be 180 miles apart.
(22 * x) + (8 * x) = 180
x = 6 hours
