I be live it would be 35 because you would just multiply 7x5 which I'd how I got my answer 35
Answer:
i dont know the answer off the top of my head but im "answering" this because the more people answer a question it will pop up at the top for people to see
Step-by-step explanation:
Answer:
x=2.45
Step-by-step explanation:
9/(x-11)=3
x9 x9 ( multiply by 9 on each side)
x-11= 27
/11 /11 ( divide by 11 on each side)
x=2.45
Happy Holidays :)
Answer:
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
The square on the hypotenuse h is equal to the sum of the squares on the other 2 sides, that is
h² = 2² + 3² = 4 + 9 = 13 ( take square root of both sides )
h =
The question is asking how many combinations of two people can be made from a group of ten people.
Using the formula C(10,2) = 10!/(2! x (10 - 2)! = 10!/(2! x 8!) = 45 handshakes.
A simple way to prove this is each person shakes the hand of 9 other people
10 x 9 = 90 but this counts every handshake from the view of both people involved.
The actual number of handshakes is therefore 90 / 2 = 45
