Count ostriches and llamas. Someone counted 47 heads and 122 legs. How many of each animals is on the farm.
1 answer:
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Answer:
Step-by-step explanation:
x + 4 - 3x = 1 + x
Combine like terms:
x - 3x
==> -2x
4 - 2x = 1 + x
Subtract x to each side:
-2x - x x - x
-3x 0
4 - 3x = 1
Subtract 4 from each side:
4 - 4 1 - 4
0 -3
-3x = -3
Divide -3 from each side:
Answer:
The no. of possible handshakes takes place are 45.
Step-by-step explanation:
Given : There are 10 people in the party .
To Find: Assuming all 10 people at the party each shake hands with every other person (but not themselves, obviously) exactly once, how many handshakes take place?
Solution:
We are given that there are 10 people in the party
No. of people involved in one handshake = 2
To find the no. of possible handshakes between 10 people we will use combination over here
Formula :
n = 10
r= 2
Substitute the values in the formula
No. of possible handshakes are 45
Hence The no. of possible handshakes takes place are 45.