Answer:

Step-by-step explanation:
can also be written as 
So the answer is just 
Answer:
D
Step-by-step explanation:
He couldn't have got y= 289 by actually answering the question, let alone subtracted to get y=289. It has to be d.
Answer:
Step-by-step explanation:
you have a right triangle,
c^=a^+b^2
c=9 and a=4
9^2=4^2+x^2
81-16=x^2
65=x^2
x=
=8.06
First Answer is C
Second Answer is B
47.85 or if you would like it rounded, the answer would be 48