This is an isosceles triangle. The angles in the legs are congruent therefore making the legs congruent as well. Hope this helps!
Answer:
The answer is 6z-28
Step-by-step explanation:
20 - 3[4(z+1) - 6(z-2)]
= 20 - 3(4z+4-6z+12)
= 20 - 3(16 - 2z)
= 20 - 48 + 6z
= 6z - 28
The solution to the problem is 16.
first, you must set up the equation.

Then, simplify exponents.
256*
Next, simplify the equation.
16