Did katherine johnson have any famous inventions or math formulas?

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

Which number completes the inequality? 2/3 < _ < 7/9