Answer:
100/5-4
Step-by-step explanation:
He spend 100 total, and he spend $5 on each book. So 100/5 would give him how many books total that he bought. If he bought 4 extra you need to subtract that to find out how many books he originally wanted to buy.
it may be 115 if its a quadrilateral
the anwser is b
divide 27 by 180 and you get an answer of 54
Answer: -8 and -4
This is something you do through trial and error. Making a list or a table like shown below might help.