Can u pls help I need a good grade

15

Step-by-step explanation:

Any triangle adds you to 180

Because it is a right triangle it will automatically  have 90°

Now you know 90° and 75°. You add it up and get 165°

Then you take the sum of all angles which is 180° and you do 180°-165°.

Your answer is 15°. it is an acute angle because it is below 90°

no idea

step-by-step explanation:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: