This is the number of combinations of 2 from 23
23C2 = 23! / 2! 21!
A quick way to do this is 23*22 / 2 = 253
Answer:
Your answer is -3
Step-by-step explanation:
We know your answer is going to be the answer because 8 is a bigger number than 5, so you take 5 away from (-8)
Which leaves you with -3
Hope this helps!
-Payshence
Answer:
x=40/9
Step-by-step explanation:

Answer:
The rational number equivalent to 3.24 repeating is 321/99
Step-by-step explanation:
To convert the decimal number to a rational number we can state this number and its multiples of 10, trying to find two number with identical decimal parts:
n=3.24242424...
10n=32.4242424....
100n=324.2424242...
Now, 100n and n have the same decimal part, then by subtracting these numbers we obtain:
100n-n=324.24242424...-3.24242424... = 321
99n = 321
n = 321/99
Answer:
8
10 divided by 5 is 2, and 2 cubed is 8