Write and simplify the expression:
3(n-6)+4n
3n-18+4n
7n-18
Solution: 7n-18
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Answer:
149.28 sq. inches
137.5 cubic inches.
Step-by-step explanation:
The cylindrical container has length or height (h) 7 inches and has a diameter of 5 inches i.e. radius (r) 2.5 inches.
Now, total surface area of the container = 
= 
= 39.28 + 110
= 149.28 sq. inches (Answer)
Again the volume of the container will be 
= 
= 137.5 cubic inches. (Answer)
Answer:
six
Step-by-step explanation:
6
Answer:
Since 36.25 is less than 42.56, we do not reject H_o.
Step-by-step explanation:
Given n=30, s^2=0.0005
The test hypothesis is
H_o:σ^2=0.0004
Ha:σ^2 not equal to 0.0004
The test statistic is
χ^2= (n-1)×s^2/σ^2 = (30-1)*0.0005/0.0004=36.25
Given a=0.05, the critical value is χ-square with 0.95, d_f=n-1=29= 42.56 (check χ-square table)
Since 36.25 is less than 42.56, we do not reject H_o.
So we can conclude that the population variance specification is being violated.
Answer:
Assuming 4 laps=1 mile, a standard track, then for every 5 minutes she runs a mile. 20 miles time 5 minutes each equals 100 minutes, or 1 hour and 40 minutes
