8/13 = 0.6153
y = cos-1(0.6153)
y = 52.0
I'm not totally sure if this is what you mean or if this is.
y = cos(8/13) = 0.9999 which to the nearest tenth is 1.0
The answer is A. 88.8 cm2
Work:
74 x 2 = 148
14.8 = 29.6
Add them = 177.6
then 
Answer:
Step-by-step explanation: 4 ratio is bigger than 3
Answer: 76
Step-by-step explanation:
3 * 2 = 6
6* 2 = 12
2 * 32 = 64
12 + 64 = 76
Answer:
17/50
Step-by-step explanation:
34% = 34/100 --> 34/100 * 1 = 34/100 * (1/2)/(1/2) = (34/2) / (100/2) = 17/50