Answer:
The probability that it would take more than four hours to construct a soapbox derby car = 0.1587 or 15.87
Step-by-step explanation:
Given -
Mean 
= 3 hours
Standard deviation 
= 1 hours
Let X be the no of hours to construct a soapbox derby car
the probability that it would take more than four hours to construct a soapbox derby car =
= 
= 
Put 
= 1 - 
= 1 - .8413 Using z table
= 0.1587
Answer:
100 yards
Step-by-step explanation:
It takes 4 yards of fabric to make a costume for one student. She needs to make costumes for every student in chorus, so you just multiply this number by 25 and get 100 yards.
Answer:5 13/30
Step-by-step explanation:
4+5/6 + 3/5
5/6 +3/5
Find LCD of 5/6 and 3/5
25/30 + 18/30
43/30= 1 13/30
4+1+13/30= 5 13/30
X=-1/29 it’s divided the 1 /29
It is correct because if you do the math you will come up with 48 - 24k = 48 - 24k
