Answer:

Step-by-step explanation:
The side that is parallel to BC is EF
Find the slope of EF:

Easiest way is just put the formula in point-slope form and simplify.
Let's use point F, which is (6,2)

Simplify:

Add 2 on both sides:

Hope this helped
Answer:
Step-by-step explanation:
10.5 is a rational number because it is a number that can be turned into a fraction.
10.5 = 10 1/2 = 21/2
Answer:
I'm pretty sure it is 4units
Step-by-step explanation:
try using a^2+b^2=c^2 formula to solve!
Hope this helps!