Answer:
12/15
Step-by-step explanation:
4/5 x 3/3 = 12/15
If you convert 1/4 into 5/20 then 13/20 + 5/20 = 18/20
Answer:
28.9
Step-by-step explanation:
Using cosine, we get the equation cos(21)=x/31. Solving cos(21), we get about 0.933. Then we multiply by 31 to get about 28.9.
What grade is this ???????????