A. find the number z that is the 20th percentile of the standard normal distribution.

In two fractions have the same denominator but different numerators, which fraction is greater? give an example

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?

Write the equation in general quadratic form: plz !