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:
a
because 1 1/2 * 1 1/2 *1 = 2 1/4
Answer:
x=-10 is your answer
Step-by-step explanation:
2(-2x+2)+x+3=37
-4x+4+x+3=37
-4x+4+x=34
-4x+x=30
-3x=30
x=-10
Hey, I'm assuming you mean five refrigerators every eight hours. So . . .
1250 divide by 5. Which gives you 250.
Then take that 250 and multiply it by 8, and you have 2000.
So it would take 2000 hrs for a factory, that can produce 5 refrigerators every eight hours to, produce 1250 refrigerators.
Answer:
180
Step-by-step explanation:
