Please help

72 degrees

Step-by-step explanation:

The angle would be 72 because of Alternate Exterior Angles are Congruent. (Since we are given that a is parallel to b)

B 72, alternate exterior angles

Step-by-step explanation:

72 and 2 are alternate exterior angles and alternate exterior angles are equal when the lines are parallel

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w