On a coordinate plane, a circle has a center at (0, 0). Point (0, negative 5) lies on the circle.
The point (0, 5) lies on a circle that is centered at the origin. Does (–3, –4) also lie on the circle?
Identify the radius from the graph.
r = units
Determine the distance from the center to
(–3, –4) using the distance formula.
distance = units
Compare the radius to the distance. Does the point (–3, –4) also lie on the circle?

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39