Answer:
for the number 13
Step-by-step explanation:

by Pythagoras theorem
x= √81+36
x= √117
punch square root of 117 with a calculator, I don't have one now
Answer:
y = x - 3
Step-by-step explanation:
Answer: 16 centimeters------nice computer by the way
Step-by-step explanation: addition
Answer:y=-2x+6
Step-by-step explanation: Write in Slope-Intercept form, y=mx+b.
Hope this helps you out! ☺