Answer: She bought 68 books.
Step-by-step explanation:
Subtract 31 from 99 to find the difference! The difference tells us how many books she bought at the yard sale.
Answer:
8:14, 12:27, 40:70
Step-by-step explanation:
Easy just find out the last year change and the whatever the other questions say
Answer:
#1 is 2x-12°=-12
#2 is x+34°=34
Step-by-step explanation:
when it tells you to add the second number will always be that number but a positive.
when it tells you to subtract the second number will always be that number but a negative.
plus=positive
minus=negative
remember that.
hope that helped you out!