Question

Find the value of x
(8x-1) (4x+7)

Answer 1

Answer:

The value of x = 7

Step-by-step explanation:

Given the right triangle

• Right angle = 90°

• α = (4x+7)°

• β =  (8x-1)°

• We know that the sum of angles of a triangle is 180°.

so

Right angle + α + β =  180°

90° + 4x+7 + 8x-1 = 180

Group like terms

$4x+8x+90+7-1=180$

Add similar elements: :4x+8x=12x

$12x+90+7-1=180$

$12x+96=180$

$12x=84$

Divide both sides by 12

$\frac{12x}{12}=\frac{84}{12}$

$x = 7$

Therefore, the value of x = 7