20 A box contains 6 red marbles and second marble is pulled from the box.
from the box and not replaced. Then a
4 white marbles. One marble is pulled
What is the probability both marbles
are white?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Me n o w. i need t h i s. 10 points