It's 40,000 because you have to check the Number on your right if it's five or more are you rounded it if it's four or less it stays the same
(4x + 2)(4x - 2) = 16x^2 - 8x + 8x - 4
Combine like terms 16x^2 - 4
Explanation
Just multiply the each term in the first parentheses by the other terms in the second parentheses.
Ok so there is a total of 12 marbles.
drawing a black is a probability of 3/12. drawing a red is a probability of 4:12
So first it is 3/12 and then because three are drawn instead of out of 12 it is out of 9 for red, so 4/9
3/12 x 4/9
the answer is 1/9
Answer: A
Graph cut the horizontal and vertical axis at 2 points A(0;5) and B(1.66666;0)
you calc x=0 in the answer and have y
you can choose A or B. Next, you calc y=0 into A,B. If x=1.6666666, your answer is A
Sorry about my bad english
