Find the measure of the arc indicated. The lines are tangent

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?