A biased coin is weighted so that
heads comes up twice as often
as tails. Find the probability of
tossing a tail.
The answer is 1/3
Can someone explain me this? Thank you. :)
Find the value of n for which the
equation (n + 2) x2+ 3x - 5 = 0 has one
root triple the other.
Would appreciate it if someone explains this to me. Thank you.
Need help! Thank you.
This is question 12 from Exercise 11a
A point P(x,y) moves so that its distance from the point K(2,5) is twice its distance from the line x = -1. Draw a diagram and find the equation of the locus.
The answer in the textbook is 3x2 - y2 +12x + 10y -25 = 0...