A 180° angle (straight line) is formed by two adjacent angles. One angle has a measure of (2x+3)° and the other has a measure of (x−6)° . What are the measures of the two angles that make up the straight line?(1 point) Responses 186° and 88° 186 degrees and 88 degrees 129° and 51° 129 degrees and 51 degrees 121° and 59° 121 degrees and 59 degrees 125° and 55° 125 degrees and 55 degrees

1 answer

To solve this problem, we can set up an equation.

Since the two angles form a straight line, their measures add up to 180 degrees.

So we have the equation:

(2x+3) + (x-6) = 180

Combining like terms, we have:

3x - 3 = 180

Adding 3 to both sides, we have:

3x = 183

Dividing both sides by 3, we have:

x = 61

Now that we have the value of x, we can substitute it back into the expressions for the two angles to find their measures.

The first angle is:

2x+3 = 2(61) + 3 = 123 + 3 = 126 degrees

The second angle is:

x-6 = 61 - 6 = 55 degrees

Therefore, the measures of the two angles that make up the straight line are 126 degrees and 55 degrees.

So the correct answer is:

126 degrees and 55 degrees.