A hiker is descending a mountain at an average rate of 0.01 mile in elevation for every 1 mile of hiking, as shown in the diagram below. which expression represents the measure of the angle of depression (x)?

What is the reflection image of (5,-3) across the line y = -x?

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°

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?