Determine the value of x in the figure

1. what is the measure of ∠abc? what is the measure of ∠abd?

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°

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?