Answer:
Includes Steps
Step-by-step explanation:
3/4x-7 =3(1/6x+1)
3/4x-7=3/6x +3
1/4x=10
x=40
Answer:
105km
Step-by-step explanation:
2.5/15=17.5/x (set up as a proportion)
2.5x=262.5 (cross multiply)
x=105 (Divide)
The answer is 2.6666666667
Answer:

Step-by-step explanation:
A random sample of 121 observations produced a sample proportion of 0.3
Here,


for a 95% confidence level = 1.96
So the interval will be,

Marginal Error can be calculated as,

Putting all the values,

Hence, the interval will be,


