There are 15 marbles in the bag. This gives us the probability of picking a red marble as 5/15, or 1/3. Because you replace the marble therefore making the probability the same each time, and as it's a logical 'and' operation, you multiply the probabilities like this:
(1/3)•(1/3)=(1/3)^2
Because (a/b)^c = a^c/b^c, P(two red marbles) = 1^2/3^2 = 1/9.
Answer: 35
Step-by-step explanation:
The formula to find this is number of terms/2(first term+last term)
So, we have 7 terms, our first is -4 and our last is 14
7/2(-4+14)=35
Four plus a number times three is seventeen
to be honest I agree that would be 6s
Answer: 672m³
Step-by-step explanation:
V= LxWXH
=14 * 8 * 6
=672