Answer:
C
Step-by-step explanation:
12 divided by 3 is 4 and 30 divided by 3 is 10
Answer:
5a+5b
Step-by-step explanation:
Multiply each variable in the parenthesis by the number outside.
Hope this helps.
7 is 35% out of 20, when you divide 7 by 20, you get 0.35 which is 35%.
Answer:
The 98% confidence interval for the mean consumption of milk among people over age 32 is between 3.3 and 3.5 liters.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
That is z with a pvalue of 
, so Z = 2.327.
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 3.4 - 0.1 = 3.3 liters
The upper end of the interval is the sample mean added to M. So it is 3.4 + 0.1 = 3.5 liters
The 98% confidence interval for the mean consumption of milk among people over age 32 is between 3.3 and 3.5 liters.
Answer:
$22.40
Step-by-step explanation:
For this question you have to use decimal multipliers to work out the sale price of the cola given the information that in a grocery store, a $32 case of soda is labelled get a 30 % discount so to use decimal multipliers we have minus 100 by 30 and then divide by 100
→ We have to minus 100 by 30
⇒ 70
→ And then divide by 100
⇒ 70 ÷ 100 = 0.7
0.7 is the decimal multiplier for this question so we multiply it by the case of soda price with is $32 so
32 × 0.7 = 22.4
The sale price of the case of soda is $22.40 considering a 30% discount on a $32 case of soda
