PQ=60 mm, RS=80 mm and the radius of the circle is 50 mm. O is the centre in (a) and (b). Find the distance between the parallel chords in each case ​

Asegment in the complex plane has a midpoint at 7 – 2i. if the segment has an endpoint at 11 – 3i, what is the other endpoint?

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Find the value of x. give reasons to justify your solutions! l, m ∈ kn