Answer: 47
Step-by-step explanation:
Given : Margin of error :
Significance level :
Critical value :
The formula to find the sample size when no prior proportion exists is given by :-
i.e.
Hence, the minimum required sample size =47
Answer:
x = 9.17 (nearest hundredth)
The variable x is the amount the student needs to save each month in addition to his usual saved amount of $20.
Step-by-step explanation:
350 = 12(x + 20)
Multiply out brackets: 350 = 12x + 240
Subtract 240 from both sides: 110 = 12x
Divide both sides by 12: 9 1/6 = x
x = 9.17 (nearest hundredth)
The variable x is the amount the student needs to save each month in addition to his usual saved amount of $20.
Answer:
Product is 2.25
Sum is -3.75
Step-by-step explanation:
The equayion
Is solved as follows
By factorization
(4x+3)(x+3)=0
X+3=0 hence x=-3
4x+3=0 hence x=-3/4=-0.75
Product of -3 and -0.75 is -3*-0.75=2.25
Sum of -3 and -0.75=-3.75
Answer:
15
Step-by-step explanation:
f(x) = x^2+1
f(2) = 2^2+1 = 4+1 = 5
g(x) = 3x+1
g(3) = 3(3)+1 = 9+1 = 10
f(2)+g(3) = 5+10 =15
Graph 1 would be the answer