In triangle ghi line GI is extended through point I to point J, angle GHI = (2x - 3)⁰, angle IGH = (2x + 15)⁰, and angle HIJ (7x – 18)°. Find measurment of angle GHI.

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 7x + 33, and the other angle measures 70. 5.3 8.14 11 14.7

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)