How do you do a a b and d? i need bad!

a: x = 17

b: x = 17

d: x = 4

Step-by-step explanation:

For a: the two angles add up to 90°, so use the equation

2x + 3x - 5 = 90          now solve for x...

     5x = 85

              x = 17

For b:  the two angles make a straight line, so their sum is 180°, use the equation

6x + 3 + 4x + 7 = 180      now solve for x...

    10x = 170

             x = 17

For d: the two angles are vertical angles, so they are equal in measure, use the equation

5x - 3 = 3x + 5             now solve for x

   2x = 8

           x = 4

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2