Answer:
-11 + 4
Step-by-step explanation:
When you subtract a negative the sign will switch to plus, so it this case you would switch the - (-4) to a + 4 but you don't change the -11 at the front.
You will know when two lines exactly verticle and horizontle meet together that one intersection will be a right angle it will be exactly 90 degrees.
This would be an isosceles triangle
36 feet
3ft is 1 yard so you would multiply the 12 yards by 3 making 36.
d line 1 and 3
