Abox contains 13 transistors, 3 of which are defective. if 3 are selected at random, find the probability that

a. all are defective
b. none are defective

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!