2/3(x-5/6)+4x i need

and write out the problem.

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

What makes a trapezoid an isosceles trapezoid?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters