How to solve this?someone help me

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°