Answer:
$25
Step-by-step explanation:
18.75 is 75% of a value. You can easily find the answer by dividing 18.75 and 0.75.
When you have a problem like x*5=30, you divide 30/5 to get 6. Same here, x*0.75=18.75. Divide 18.75/0.75 to get the answer.
The 3rd answer, is correct.
Answer:
m√n + 2n -n√m
Step-by-step explanation:
Solution:
4√n^2 +√m^2n - √4n^2 - √mn^2
= 4n + m√n - 2n - n√m
= m√n + 4n - 2n - n√m
Therefore, m√n + 2n -n√m
PLZ MARK ME AS BRAINLIEST!!!
Answer:
36
Step-by-step explanation:
Data provided in the question:
Standard error = 1.5 minutes ( ∵ number are repetitive 1.51.5 )
Standard deviation = 9 minutes ( ∵ number are repetitive 99 )
Now,
Standard error = ( Standard deviation ) ÷ √n
Here,
n is the sample size
Therefore,
on substituting the respective values, we get
1.5 = 9 ÷ √n
or
√n = 9 ÷ 1.5
or
√n = 6
or
n = 6² = 36