78×.33=25.74 busses are new
25.74+15=40.74 new busses
78+15=93 total busses
40.74/78=0.5223076923= 52% will be new with the new 15 busses
Answer: 11.8
Step-by-step explanation:
Answer: Complementary angles
Step-by-step explanation:
wxy is making a 90 degree angle which is a complementary. A supplementary is a 180 degree angle