Figure abcd is a rhombus.
what is the value of х?
13
(5х +25)

(7x-1)

Can someone check if i did this correct. it’s number 4 if you’re wondering.

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?