Craig is building a bicycle ramp with a 3-ft rise over a 10-ft horizontal run as shown in the figure. What is the length m of the ramp? Round to the nearest tenth.

15 points ! ~ see if you know the answer to both you!

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.