Step-by-step explanation:
Hey there!!
Given,

Cross multiply.
15 = 2z
Therefore, z= 15/2
<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em>
All 3 angles of a triangle add up too 180, so 80+55= 135, 180-135 is 45, so the value of x is 45
Answer:
Solve by Factoring x^4-52x^2+576=0. Rewrite as . Let . Substitute for all occurrences of . Factor using the AC method. ... If any individual factor on the left side of the equation is equal to , ... The final solution is all the values that make true.
Step-by-step explanation: