Solving a word problem using a quadratic equation with irrational roots. h=138t-16t^2

Find all values of t for which the rocket’s height is 78 feet.

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.