Answer:
73
Step-by-step explanation:
First, to get rid of the square root, square both sides of the equation to get:
y-9=64
Then, move 9 to the other side to get
y=73
Answer: -17/4
Step-by-step explanation:
4/8 into decimal form is <em>0.5</em>
30cm2 I believe this is the answer according to my calculations