Given:
15 students
2 students must be chosen.
No repetition, no order
This is a combinations problem. We use this formula: n! / (n-r)!(r!)
n = 15 ; r = 2
15! / (15-2)!(r!) ⇒ 15! / 13! * 2! = 105
Answer:
idk
Step-by-step explanation:
Answer:
Step-by-step explanation:
We have
Put the coordinates of the given points and check the inequality:
For (0; 5) → x = 0; y = 5
For (2; 4) → x = 2, y = 4
For (1; 3) → x = 1, y = 3
(x+4)(x+6)=0
x = -4, x=-6
The answer is C.
Answer:
x = 7
Step-by-step explanation:
The 2 marked angles are Alternate exterior angles ( they are outside the parallel lines ) and are congruent, that is
10x = 9x + 7 ( subtract 9x from both sides )
x = 7
