Is y=4/3x-44/3 y=-5/2x+9/2 a solution

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Evaluate the expression for the given value of the variable 7a - 4a for a =8