The senior classes at High School A and High School B planned separate trips to the local amusement park. The senior class at High School A rented and filled 11 vans and 10 buses with 497 students. High School B rented and filled 11 vans and 6 buses with 373 students. Each van and each bus carried the same number of students. Find the number of students in each van and in each bus.

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92