Find an equation of a parabola that opens down and has the following x intercepts (1,0) and (7,0)

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute