Part 1: Which two equations can be used to determine the measure of these two adjacent angles?

(2 points)
Responses

(2x+3)−(x−6)=180
open paren 2 x plus 3 close paren minus open paren x minus 6 close paren is equal to 180

(2x+3)+(x−6)=180
open paren 2 x plus 3 close paren plus open paren x minus 6 close paren is equal to 180

2x+3=x−6
2 x plus 3 is equal to x minus 6

(x+6)−(2x+3)=180
open paren x plus 6 close paren minus open paren 2 x plus 3 close paren is equal to 180

3x−3=180
3 x minus 3 is equal to 180
Question 2
Part 2: Solve one of equations and determine the measure of each angle.(3 points)
x =

Angle 2x + 3 is
degrees.

Angle x - 6 is
degrees.

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1 answer

To determine the measure of the two adjacent angles given, we need to identify the correct equation.

When two angles are adjacent and form a linear pair, their measures add up to 180 degrees. Therefore, we will be looking for an equation that represents the sum of the two angles.

Reviewing the options provided:

  1. (2x + 3) - (x - 6) = 180: This indicates a subtraction and does not correctly represent the relationship between adjacent angles.

  2. (2x + 3) + (x - 6) = 180: This equation correctly sums the two angles, making it the correct choice for adjacent angles.

  3. 2x + 3 = x - 6: This does not represent the sum of angles and is incorrect for this context.

  4. (x + 6) - (2x + 3) = 180: This is also a subtraction and incorrect.

  5. 3x - 3 = 180: This does not represent the relationship of the angles either.

Thus, for Part 1, the correct answer is:

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


For Part 2, let's solve this equation:

\[ (2x + 3) + (x - 6) = 180 \]

Combine like terms:

\[ 2x + x + 3 - 6 = 180 \]

This simplifies to:

\[ 3x - 3 = 180 \]

Add 3 to both sides:

\[ 3x = 183 \]

Now, divide by 3:

\[ x = 61 \]

Now, we can find the measures of the angles:

  1. For Angle \(2x + 3\):

\[ 2x + 3 = 2(61) + 3 = 122 + 3 = 125 \text{ degrees} \]

  1. For Angle \(x - 6\):

\[ x - 6 = 61 - 6 = 55 \text{ degrees} \]

So, the final answers are:

  • \(x = 61\)
  • Angle \(2x + 3\) is \(125\) degrees.
  • Angle \(x - 6\) is \(55\) degrees.