The equation of line cd is (y−3) = − 2 (x − 4). what is the slope of a line perpendicular to line cd?
a. 1 over 2
b. 2
c. negative 1 over 2
d. −2

He concluded that a heavier object dropped from the same height as a lighter object will land

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the