The number of handshakes that will occur in a group of eighteen people if each person shakes hands once with each other person in the group is 153 handshakes
In order to determine the number of handshakes that will occur among 18 people, that is, the number of ways we can choose 2 persons from 18 people.
∴ The number of handshakes = 






∴ The number of handshakes = 153 handshakes
Hence. 153 handshakes will occur in a group of eighteen people if each person shakes hands once with each other person in the group.
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Answer:
he must work 8 hours
Step-by-step explanation:
soln:
given,
$8=1 hour
or,$1=1/8 hour
so,
$64=64*1/8 hour
•°•$64=8 hours
Answer:
Regroup Terms: cos 45 tan 45x + tan^2 tan 30x, 60
7b-6(11-2b)=10
The first step is to distribute. Multiply each number inside the parentheses by -6.
7b + (-6*11) + (-6*-2b) = 10
7b - 66 + 12b = 10
Now combine like terms.
19b - 66 = 10
Add 66 to both sides.
19b = 76
Divide both sides by 19.
b = 4
The answer is b = 4.
Answer:13
Step-by-step explanation: Your going up on the number line.
Hope I was able to help! :)