The answer should be 10 but it is not in the choices
Answer:
1.5
Step-by-step explanation:
okay so what you are going to do first is put a line down where the < is this will separate 3m+18 and 30.
next you want to make the M by itself so you are going to subtract 3 from both sides so 3m-3 and 30-3.
30-3=27
okay now your problem should look like this 18<27
then you are going to divide the problem 27/18
once you divide 27/18 1.5 should be your answer or if you need it in a fraction form your answer will be 1 1/2
Answer:
16 days
Step-by-step explanation:
24 men works 8 hours a day to complete a work in 15 days. While 20 men works at 9 hours per day to complete the same work in x days. We can find the number of days it took the 20 men by using the expression below:
24 men * 8 hours/day * 15 days = 20 men * 9 hours/day * x days
Therefore it took 20 men working 9 hours/day, 16 days to complete the same work
Answer:
75 boys
Step-by-step explanation:
5:4
? : 60
60/4= 15
?/5=15
*5 *5
?= 75
Answer: (24.02,25.98)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given : Sample size : n= 100
Sample mean :
Standard deviation :
Significance level :
Critical value :
The confidence interval for population mean is given by :-
Hence, the 95% confidence interval for the population mean of training times is (24.02, 25.98).