Answer:
30 pages a hour
Step-by-step explanation:
1.5 every 3 minutes
there is 60 minuts in an hou you already have 3 so thimes it by 20 to get 60 then times 60 by 1.5
Answer:
x=±8
Step-by-step explanation:
You add 11 on both sides
x^2=53+11
x^2 = 64 so
x=8 or x=-8
Answer:
6.95
Step-by-step explanation:
$41.70 / 6 = $6.95 for each box
Answer: A. 1.2
Step-by-step explanation:
Given : Sample size : n= 64
Standard deviation: 
The formula to find the standard error of mean is given by :-

Therefore, the standard error of the mean= 1.2
Hence, A is the right option.