What are the solutions of the equation (2x + 3)2 + 8(2x + 3) + 11 = 0? use u substitution and the quadratic formula to solve.
0 x 4+5
oto 7√5
x--7 and x = -2
x = -1 and x-4

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

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