Can Anyone help me? Can you please show work I mean you don’t have to you can just tell me the answer

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.