6/9 (2/3) and 2/3. Hope this helps you.
Answer:
He needs 7 more consecutive successful first serves to raise his first serve percentage to 60%.
Step-by-step explanation:
After n consecutive serves, his total number of serves is going to be n+8, since he has already served 8 times. In the best case, his number of successful first serves is n+2.
His percentage of succesful first serves is the division of the number of succesful first serves divided by the total number of serves. So

We want
. So







He needs 7 more consecutive successful first serves to raise his first serve percentage to 60%.
-3^3=9
18-9+3•2
9+3•2
12•2
24
Answer:
56
Step-by-step explanation:
(14-7)×(40-32)
(7)×(8)
56
13) B. 8.47,8.67,8.7
14) A
Just ask for explanation if u need it
Hope that helped :)