1) This is a combination, so use ⁴⁰C₂.
⁴⁰C₂ = 780
There are 780 handshakes in total.
2) I got my solution by using the combinations formula. Or another way you could do this is to add up... 39 + 38 + 37 + 36 + 35 + 34 + 33 + 32 + 31... +1. You will end up with 780 (I did this to double check my work).
3) The quickest way to figure this out if Drake invited 1,000 people is to use the natural numbers formula = n(n+ 1)/2.
Plug the numbers in: 999(1000)/2 = 499,500
If Drake invited 1,000 people, there would be 499,500 handshakes.
Answer:
It is rational
I'm sorry if it's wrong
Step-by-step explanation:
Rational: Stops
Irrational: Keeps going on
Answer:
x = 60
Step-by-step explanation:
Perhaps you want the solution to this equation.
Subtract 0.18x from both sides:
8.4 = 0.14x
Divide by the coefficient of x.
8.4/0.14 = x = 60
Answer:
2.25
Step-by-step explanation:
Just add it up, IDK if it's the full answer because you had 3 dots (...).
