The answer is $50
Assume the original cost price to be $x
Therefore ,
X - 36X/100 = $32
-> 100x - 36x = 32 x 100
-> 64x = 3200
-> x = 3200/64
-> x = 50
7.5% = 7.5 /100 = 0.075
80 * 0.075 = 6 ← answer
Answer:
Step-by-step explanation:
The confidence interval for the difference of two population proportion is given by :-
Given :
The proportion of students in the first sample replied that they turned to their mother rather than their father for help. =
The proportion of students in the second sample replied that they turned to their mother rather than their father for help. =
Significance level :
Critical value :
Now, the 98% confidence interval for will be :-
Hence, the 98% confidence interval for is
Answer:
90 miles.
Step-by-step explanation:
Knowing that an inch is equal to 40 miles you can take 40 and multiply it by 2 1/4, thus getting 90. Or, you can break it down. 2 times 40 equals 80. This leaves 1/4 inch left to figure out. If you divide 40 by 4 (figuring out a fourth) you would get 10. Add 80 and 10 and you would have 90 miles.