For two vertical angles with measures m∠2=(5x+23)°

and m∠4=(3x+35)°
, what is the measure of each angle?(1 point)
Responses

15.3°
15.3 degrees

53°
53 degrees

29°
29 degrees

1 answer

Vertical angles are equal, so you can set the measures of the two angles equal to each other:

\[ m∠2 = m∠4 \]

Substituting in the expressions for the angles:

\[ 5x + 23 = 3x + 35 \]

Now, solve for \(x\):

  1. Subtract \(3x\) from both sides: \[ 5x - 3x + 23 = 35 \] \[ 2x + 23 = 35 \]

  2. Subtract \(23\) from both sides: \[ 2x = 35 - 23 \] \[ 2x = 12 \]

  3. Divide by \(2\): \[ x = 6 \]

Now, substitute \(x\) back into either angle to find the measures:

For \(m∠2\): \[ m∠2 = 5(6) + 23 = 30 + 23 = 53° \]

For \(m∠4\): \[ m∠4 = 3(6) + 35 = 18 + 35 = 53° \]

Thus, both angles measure \(53°\).

The measure of each angle is 53 degrees.