There are 5 blue marbles out of 20, so 1/4.Then we have one reduced bead so (5-1)/(20-1) = 4/19
Multiply these probabilities and you'll have your answer!
Ask if you don't understand anything. :)
And what's the question?
3 chickens lay 3 eggs in 1.5 days, so each lay 3/3 = 1 in 1.5 days. 2 chickens lay 2*1 = 2 eggs in 1.5 days.
200/2 = 100 so 100 * 1.5 = 150 days
If you don't understand anything feel free to ask
Point C. If you connect 3points into a triangle, B is lower than C.
I disagreen since -10 is 10 away from 0(sea level) and 15 is 15 away. 10<15 thus I disagree.
2sqrt(10) goes just above 6, so we start at 7. 10sqrt(2) is just above 14, so we use 14.
7-14 goes to (7-6) - (14-6) and 1 - 8. 8 ints.
If you don't understand anything feel free to ask.
This is an AoPS question.
y = 5x +150 and y = 15x.
y is the total paid, so for equation one, 150 dollars membership plus 5 times x, the number of times you go, is the total.
for equation 2, no 150 membership so 15 times x
Using the pythogoream thereom, OA is the square root of (1.5)^2 + 1^2 = 3.25.
The exact answer is sqrt(3.25) - r = sqrt(3.25) - 1, and it's about 0.80
+1005 