A: b + 9
Step-by-step explanation:
If it's the sum of two numbers it is addition, meaning that you add the number of blue bikes(b) to the number of red bikes(9).
Answer: 271
Step-by-step explanation:
The formula we use to find the sample size is given by :-
, where is the two-tailed z-value for significance level of
p = prior estimation of the proportion
E = Margin of error.
If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes
Given : Margin of error : E= 0.05
Confidence level = 90%
Significance level
Using z-value table , Two-tailed z-value for significance level of
Then, the required sample size would be :
Simplify,
Hence, the required minimum sample size =271
Answer:
x = -14/3
Step-by-step explanation:
-2(3x + 1) = 26
Distribute the -2 to the number in the parentheses.
-6x - 2 = 26
Add 2 to both sides of the equation.
(-6x - 2) + 2 = 26 + 2
-6x = 28
Divide both sides of the equation by -6.
(-6x)/-6 = 28/-6
x = -28/6
x = -14/3
He went 41 miles altogether, because 10+30+1=41
Answer:
$1.65
Step-by-step explanation:
4.95/3=1.65