Answer:
2x-4 would be the expression simplified.
Step-by-step explanation:
5(x-2) = 5x-10
-3x(x-2) = -3x +6
Combine them by addition 5x-10+-3x+6
2x-4
I believe the answer is D.
Answer:
a) true
Step-by-step explanation:
There are 13 heart-suit cards in a 52 card deck.
Since cards are returned to the deck after each pick, all of the 15 events are independent and have the same likelihood of occurring. Therefore, this experiment follows a binomial distribution with the following properties:
Number of events (n) = 15
Probability of success (Picking a heart) = 13/52 = 1/4
Probability of failure (Not picking a heart) = 39/52 = 3/4
In conclusion, the statement provided is true.
Answer:
Step-by-step explanation:
Well, I really don’t like graphic approaches in math, so hear ya go a formula:
Although there are easier ways that work for some quadratics, but this formula works for them all. (It is atached, have a look)
So,
( -(-2)+- square root of ((-2)^2-4(1)(-40)) ) / 2(1)
Note that for a hear I use one, since there is nothing in front of x.
( 2 + (12.8) ) / 2 < with plus
( 2 -(12.8) ) / 2 < with minus
X = 7.4
Or
X = -5.4
(Quad equations have 2 answers)