Answer:
68.26% of the parts will have lengths between 3.8 in. and 4.2 in.
Step-by-step explanation:
The lengths of a lawn mower part are approximately normally distributed

Standard deviation =
We are supposed to find What percentage of the parts will have lengths between 3.8 in. and 4.2 in . i.e. P(3.8<x<4.2)
Formula : 
At x = 3.8

Z=-1
Refer the z table for p value
p value =0.1587
At x =4.2

Z=1
Refer the z table for p value
p value =0.8413
P(3.8<x<4.2)=P(x<4.2)-P(x<3.8)=0.8413-0.1587=0.6826
So, 68.26% of the parts will have lengths between 3.8 in. and 4.2 in.
Answer:
Step-by-step explanation:
Let the income per month be S
Total income in 8 months = 8 S .
Total expenses in four months = 2500 x 4 = 10000
Total expenses in next four months = 1750 x 4 = 7000
Total expenses = 17000
According to question
Total income in 8 months = Total expenses
8 S = 17000
S = 2125 per month .
Answer:
It would be the first one honey :)
Step-by-step explanation:
Answer:
i think it is b and c im trying
Step-by-step explanation: