Find the roots of the quadratic equation 3x square+ x -7= 0, graphically for values of x from - 3 to + 3.

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Solve the triangle. a = 21°, c = 105°, c = 5