A bag contains 6 red marbles, 4 blue marbles and 5 green marbles. If two marbles are
drawn out of the bag, what is the probability, to the nearest 1000th, that both marbles
drawn will be red?

~0.143

Step-by-step explanation:

Hahah, I've always struggled with probability but I think I've got this.

So, in total there are 15 marbles, and only 6 of them are red. So the first draw will have a chance of being red. Since you didn't mention placing it back, the next draw will have a chance of being red. It's , because you just took a red one out of the bag (leaving 5 left) and the total was lessened by one. To get the answer, you'd multiply both numbers together.

6/15 x 5/14 = 1/7 or (roughly) 0.143

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x

probability for j is 1/4

while

a is 1/6