Answer:
x2 - 9x +20
Step-by-step explanation:
SA=(a+b+c) h+bh
=(5+12+13)*4+5*12
=20*4+60
=80+60
=140 cm squared
there is 1 number 3 on a 6 sided die
so the probability or rolling a 3 is 1/6
Answer:
x=15
Step-by-step explanation:
15+5=20
20/2=10
So, 15 =x
You must calculate how many ways can 2 people be selected from 65.
The formula is:
n! / r! * (n-r)! =
65! / 2! * 63! =
65*64*63! / 2 * 63! =
65*64 / 2 =
2,080 handshakes
Source:
http://www.1728.org/combinat.htm
