Step-by-step explanation:
what's his goal I will give answer in comments after you tell me
Answer:
2x-10
Step-by-step explanation:
Multiply BOTH x and -5 by 2
Answer:
7.5
Step-by-step explanation:
Answer:
≥ closed dot
< open dot
≤ less than or equal to closed dot
There are the missing blanks
The answer is C.
Here's why, nPr = n!/(n-r)!. Plug in 7 for n and 3 for r. And you get 7!/(7-3)!.
Thus, 7!/4! = (7*6*5*4*3*2*1)/(4*3*2*1), which simplifies to 7*6*5 = 210
