10C4 represent the Combinations of 10 objects taken 4 at a time.
The formula for nCr is:

In the given case, n=10 and r=4. Using these values we get:

This means we can make 210 combinations of 10 objects taken 4 at a time.
Answer:
81 degrees
Step-by-step explanation:
Answer:
AB = 1.5
BC = 0
CD = 1.5
AD = 0
Step-by-step explanation:
Sample Answer for Plato
Answer:
-3
Step-by-step explanation:
(-6)/(+2)
-6/+2
-3
The correct answer is choice d because you would divide x by 2 to get 70. then you do the same with y so 35/2 = 17.5