(71+x)/2=78
71+x=156
x=85
Th student needs to score a min of 85
I am not to sure but I think that it is 111.804 inches^3 I hope I am right if not I am really sorry.
Answer:
2x+15=33
Step-by-step explanation:
Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.
Since he started doing 15 sit-ups on the first day, the total number of sit-ups
after x days would be 2n+15.
Since he did a total of 33 sit ups today, then 2n+15=33
Step-by-step explanation:
if x is games won
then games lost is x+14
total no of games=40
x+x+14=40
2x=40-14
x=13 games won
Answer:
y= (9,13)
Step-by-step explanation:
i think im really sorry if im wrong