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A pair of parallel lines is cut by a transversal.

If [tex]\( m \angle A = (6x - 3)^\circ \)[/tex] and [tex]\( m \angle B = (9x - 24)^\circ \)[/tex], what is the value of [tex]\( x \)[/tex]?

A. 1.4
B. 7
C. 7.8
D. 13.8


Sagot :

When two parallel lines are intersected by a transversal, the corresponding angles are equal. In this case, angles [tex]\(\angle A\)[/tex] and [tex]\(\angle B\)[/tex] are corresponding angles. Therefore, we can set their measures equal to each other and solve for [tex]\(x\)[/tex].

Given:
[tex]\[ m \angle A = (6x - 3)^\circ \][/tex]
[tex]\[ m \angle B = (9x - 24)^\circ \][/tex]

Since these are corresponding angles, we can write the equation:
[tex]\[ 6x - 3 = 9x - 24 \][/tex]

To find [tex]\(x\)[/tex], follow these steps:

1. Arrange the equation:
[tex]\[ 6x - 3 = 9x - 24 \][/tex]

2. Subtract [tex]\(6x\)[/tex] from both sides to isolate [tex]\(x\)[/tex] terms on one side:
[tex]\[ -3 = 3x - 24 \][/tex]

3. Add 24 to both sides to move the constant term to the other side:
[tex]\[ 21 = 3x \][/tex]

4. Divide both sides by 3 to solve for [tex]\(x\)[/tex]:
[tex]\[ x = \frac{21}{3} \][/tex]
[tex]\[ x = 7 \][/tex]

Thus, the value of [tex]\(x\)[/tex] is 7.