Think about everyday places or situations where people use percents. Give an example.

At a store if there is an offer of 20% off certain items then you can use percentages.

Step-by-step explanation:

20% is a percentage

When people shop and their are discounts they can use percents to figure out how much it will be

ANSWER:

As angle x are in straight line with some degrees.

So, ∠x + 40° + 50° = 180°

∠x + 90° = 180°

∠x = 90°.

And ∠x and ∠y are vertically opposite angles, so they must be equal.

Therefore, ∠x = ∠y = 90°.