The 30/60/90 right triangle is the biggest cliche in trig. We recall the sides come in ratio 

First x:


Next y:


Choice C
Answer:
20x + 20
Step-by-step explanation:
4(2x+3)+ 4(3x+2)
Expand the brackets.
8x + 12 + 12x + 8
Now simplify.
20x + 20
540 adult tickets were sold and 460 kid tickets were sold
Answer: 1,278
Step-by-step explanation: 2(18x18)+2 1/2(18x14)
p.e.m.d.a.s. 18x18= 324 18x14= 252
2x324= 648 2.5x252=630
648+630 =1,278
If I had to simplify 15/24 it would be 5/8