15 : find the equation of the tangent line to the parabola y=x^2 at the point (2, 4). hint: a line y-4=m(x-2) is the tangent to the parabola if and only if the line is non-vertical and the nonlinear system
y=x^2
y=m(x-2)+4
has exactly one solution.

Select the correct answer and solve for y

Jubal wrote the four equations below. he examined them, without solving them, to determine which equation has no solution. which of jubal’s equations has no solution hurry

Captain umaima has a ship, the h.m.s. khan. the ship is two furlongs from the dread pirate nadia and her merciless band of thieves. the captain has probability 3/7 of hitting the pirate ship. the pirate only has one good eye, so she hits the captain's ship with probability 2/5. if both fire their cannons at the same time, what is the probability that the captain hits the pirate ship, but the pirate misses.