Answer:
12.5
Step-by-step explanation:
Average = (numbers added together)/ number of numbers
=(12+13)/ (2)
=25/2
=12.5
B=books
Sold half of book: b/2
Bought six more: b/2+
Now has 12: b/2+6=12
Subtract 6 on both sides: b/2+6-6=12-6
b/2=6
Multiply both sides by 2: b=12
Answer= 12 books
Answer:
6,371,640 Seconds
Step-by-step explanation:
1hr=3600
1769.9x3600=6,371,640
B .35 line the numbers up by the decimals then go from top to bottom starting from each individual column.
Hope this helps again! :)
