Find all solutions of the equation in the interval [0, 2pi) 2 2cos theta - sqrt(2) = 0

What number produces an irrational number when multiplied by -1.25

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?