Look at the picture.

We have the right triangle x, y and r. From the Pythagorean theorem we have:

We have the point

Substitute:


Answer:
To factor something out you've got to divide, so you would take 5x+40 and divide it all by 5
So, 5x/5= 1x
And, 40/5= 8
Your answer is now x+8 when factored
Answer:
-65
Step-by-step explanation:
use Khan academy it's very helpful
(x+5) (x+3) if i am correct.. I dunno for sure
Answer:
-9
Step-by-step explanation:
-2(5)+1
=-10+1
=-9
Substitute the 5 in for x