A flagpole at a right angle to the horizontal is located on a slope that makes and angle of 10 degrees with the horizontal. The flagpole casts a 30-meter shadow down the slope when the angle of elevation of the sun is 25 degrees. What is the length of the flagpole to the nearest tenth of a meter?

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

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

the answer is -1 for this question

step-by-step explanation: