Which of the following are identities? check all that apply. a) tan x - tan y = sin(x-y)/cosxcosy b) 1 - tanxtany = sin(x+y)/sinxsiny c) tan(x-pie/4) = tanx-1 d) cos(x+pie/6) = -sin(x-pie/3)

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit

What is y times x by? y is __ times x