there are three marbles in a bag. one is red and two are black. what is the probability of picking a red marble first, putting it back In the bag and then picking a black marble?

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

One of the solutions to x2 - 2x – 15 = 0 is x = -3. what is the other solution? ox=-5 ox= -1 0 x=1 x = 5