Find the value of angle m. Angles are on a straight line.

Here are the solutions to the questions:

Question 17:

Step 1: Identify the type of angles.
The angles $m$, $70^\circ$, and $58^\circ$ are angles on a straight line. The sum of angles on a straight line is $180^\circ$.

Step 2: Set up the equation.

$$m + 70^\circ + 58^\circ = 180^\circ$$

Step 3: Sum the known angles.

$$m + 128^\circ = 180^\circ$$

Step 4: Solve for $m$.

$$m = 180^\circ - 128^\circ$$ $$$$