Solve for x: help please

The angle EAF resembles a complementary angle (the sum of 2 angles that equals to 90°).

First, lets write an equation.

4x + 5x = 90

Second, solve for x.

4x + 5x = 90

9x = 90

9x/9 = 90/9

x = 10

Third, check to see if x = 10.

4x + 5x = 90

4(10) + 5(10) = 90

40 + 50 = 90

90 = 90

Hence, the answer is 10°

Best of Luck!

10 degrees

Step-by-step explanation:

Angle A is a right angle triangle.

Right angle triangle = 90deg.

So

4x + 5x = 90 degrees

9x = 90 degrees

Divide both sides by 9

9x/9 = 90/9

x = 10 degrees

a) 15/7

step-by-step explanation:

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information