2. If ∠A and ∠B are supplementary and ∠A = 4x – 8 and ∠B = 2x +2, what is the value of x?



A. 43
B. 22
C. 180
D. 31

Respuesta :

Answer:

The value of x is 31 .

Option (D) is correct .

Step-by-step explanation:

As given

If ∠A and ∠B are supplementary and ∠A = 4x – 8 and ∠B = 2x +2 .

Thus

∠A + ∠B = 180 °

4x - 8 + 2x+ 2 = 180

6x - 6 = 180

6x = 180 + 6

6x = 186

[tex]x = \frac{186}{6}[/tex]

x = 31

Therefore the value of x is 31 .

Option (D) is correct .

Answer:

Option D is correct

The value of x is, 31 degree

Step-by-step explanation:

Supplementary Angles:

Tow angles are supplementary when they are add up to 180 degree.

As per the statement:

If ∠A and ∠B are supplementary and

[tex]\angle A = 4x-8[/tex] and

[tex]\angle B = 2x+2[/tex]

By definition of supplementary angle:

⇒[tex]\angle A+ \angle B = 180^{\circ}[/tex]

Substitute the given values we have;

[tex]4x-8+2x+2 = 180^{\circ}[/tex]

Combine like terms;

[tex]6x-6 = 180^{\circ}[/tex]

Add 6 to both sides we have;

[tex]6x = 186^{\circ}[/tex]

Divide both sides by 6 we have;

[tex]x= 31^{\circ}[/tex]

Therefore, the value of x is, 31 degree.