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slavikrds [6]
3 years ago
11

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

Mathematics
1 answer:
BARSIC [14]3 years ago
4 0
Total handshakes will be \\2^{n} = 2^{66}

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Sharla is 8 year older than her sister, patricia . The sum of their ages is 102.Find their ages.​
Alisiya [41]

Answer:

Patricia is 47 years old

Sharla is 55 years old

Step-by-step explanation:

Rewrite the first sentence as an equation: (S= Sharla) (P= Patricia)

S=P+8

Rewrite the second sentence as an equation:

S+P=102

1) Substitute P+8 as Sharla in the second equation:

P+8+P=102

2) Combine alike terms:

2P+8=102

3) Subtract 8 from both sides:

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4) Divide both sides by 2:

P=47

5) Substitute 47 as P in the <u>First</u> equation:

S=47+8

6) Solve:

S=55

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Step-by-step explanation:

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