Answer:
A) B) E)
Step-by-step explanation:
I had this question on one of my tests and I got it right :)
The probability expression is 
<h3>How to determine the probability expression?</h3>
The given parameters are
- Sophomore = 6
- Freshmen = 14
The total number of people is
n = 20
2 of the 20 people are to be selected.
So, the number of selection is
This gives
The expression that represents both students being sophomore is
--- i.e. 2 students selected from 6
The probability is then represented as:
Hence, the probability expression is
Read more about probability at:
brainly.com/question/8524947
#SPJ1
Answer:
y = 15(x -10)^2 -1560
Step-by-step explanation:
It usually works well to divide the leading coefficient from the x terms:
y = 15(x^2 -20x) -60
Now, add the square of half the x-coefficient inside parentheses. Subtract the same amount outside.
y = 15(x^2 -20x +100) -60 -(15)(100)
y = 15(x -10)^2 -1560 . . . . . collect terms; write the parentheses as a square
Answer:
5
Step-by-step explanation:
a + b
2 + 3
5
