Subtract original amount from new amount:
84 - 39 = 45
He bought 45 books.
Answer:
13x3= 39
Step-by-step explanation:
10x3=30
3x3=9
30+9=39
Hope it helps!
Answer:
D. 55%
Step-by-step explanation:
The error range ± 9% means that the range is 9% below 62% or 9% above 62%.
The range is:
(62% - 9%) to (62% + 9%)
53% to 71%.
The only answer between 53% and 71% is 55%.
Answers A, B, C are all greater than 71%.
Mean
add up numbers and divide by how many there are
(1+1+5+3+6+6)/7=3 and 2/3
Answer:
B and C
(I'm not sure if b and e are supposed to be the same though) if they are then, b, c, and e
