What is an equation of the line perpendicular to y=1/2x-9 that passes through (2,4) ? A y=1/2x+3 B y= -2x+8 C y= -2x+10 D y= -1/2x+5

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?