Side B would be about 7.56 if you use trig.
Answer: 30
Step-by-step explanation:
rs + 2s when r = 8 and s = 3
8(3) + 2(3)
8 * 3 = 24
2 * 3 = 6
24 + 6 = 30
If you don't know the value of 'a', we can only simplify.
4a - 11a = -7a
We combine since they are like terms.