Answer:
26
Step-by-step explanation:
Answer: 0.3413
Step-by-step explanation:
Given :Mean : 
Standard deviation : 
The formula for z -score :
For x= 60 ,
For x= 65 ,
The p-value = 
Hence, the probability that the project will take anywhere between 60 and 65 weeks to complete = 0.3413.
Answer: the speed of the current is 10 mph.
Step-by-step explanation:
Let x represent the speed of the current.
Janet’s boat will go 10 miles per hour in still water. This means that the total speed at which she went downstream is (10 + x) mph.
Time = distance/speed
If he can go 120 miles downstream, then the time taken to go downstream is
120/(10 + x)
The total speed at which she went upstream is (10 - x) mph. If at the same time, she goes 40 miles upstream, then the time taken to go downstream is
40/(10 - x)
Since the time is the same, it means that
120/(10 + x) = 40/(10 - x)
Cross multiplying, it becomes
120(10 - x) = 40(10 + x)
1200 - 120x = 400 + 40x
120x + 40x = 400 + 1200
160x = 1600
x = 1600/160
x = 10 mph
Answer:
2(6x+78)
Unless it's the exact number. You hadn't specified what x is.
Answer:
C
Step-by-step explanation:
Have a nice day :)
when you can plz give me brainllest
