Please help!! Select all ratios equivalent to 20:4 a. 11:1 b. 9:6 c. 15:3

An angle that measures between 90 and 180° is called a(,

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Which equation represents h for right triangle abc