Answer:
21
Step-by-step explanation:
whats 9 + 10
it shows that y is 3 quarters of x so for example if x is 12 then y would be 9 since it is 3 quarters of x :)
SinZ=24/40 = 12/20 = 3/5
C)
1, 0 I know those for sure. Not sure about the others
Its X And The Sum Of N Is Going To Be 27