Answer:
the slope is determined by rise over run, meaning you first have to see if the line is negative or positive by the direction it is facing,then you have two points that match accordingly to rise over run,to find out you have to see how many boxes(y) you are rising and however many boxes to the right(x) you are running,then you divide rise/run(look in picture attached for more)
Answer:
-3ab, -9x^2 -13x
Step-by-step explanation:
45a^4b^3 - 90a^3b/ 15a^2b
-45ab^2/15a^2b
-3ab
13) (x-7x^2) - (2x^2+14x)
-9x^2 -13x
Answer:
40
Step-by-step explanation:
100-60=40
The number of students who worked < 15 hours is decreasing as time goes on
THe correlation coefficient is negative.
Answer:
455 possible ways
Step-by-step explanation:
We are told that 15 women are trying out for parts in a production of snow white.
Now, we want to find the number of ways that 3 women can be selected to play.
This is simply a combination question.
Thus;
Number of ways = C(15, 3) = 15!/((15 - 3)!(3!) = 15!/(12! × 3!) = (15 × 14 × 13 × 12!)(12! × 3 × 2 × 1)
12! will cancel out to give;
(15 × 14 × 13)/6 = 455