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salantis [7]
3 years ago
14

Math help pls!! i have no clue how to do this

Mathematics
1 answer:
REY [17]3 years ago
6 0

Answer:

I THINK it's A

Step-by-step explanation:

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The most popular mathematician in the world is throwing aparty for all of his friends. As a way to kick things off, they decidet
ratelena [41]

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 : ^nC_r=\frac{n!}{r!(n-r)!}

n = 10

r= 2

Substitute the values in the formula

^{10}C_{2}=\frac{10!}{2!(10-2)!}

^{10}C_{2}=\frac{10!}{2!(8)!}

^{10}C_{2}=\frac{10 \times 9 \times 8!}{2!(8)!}

^{10}C_{2}=\frac{10 \times 9 }{2 \times 1}

^{10}C_{2}=45

No. of possible handshakes are 45

Hence The no. of possible handshakes takes place are 45.

4 0
3 years ago
Maria Spent 40 minutes chatting online. How many minutes did she spend playing games?
Aleks [24]
She spent 10 minutes. 25% x 40 = 10.
5 0
3 years ago
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many elevators have a capacity of 2000 pounds, if a child averages 50 pounds and an adult averages 150 pounds, write an inequali
Brums [2.3K]

50x  +  150y = 2000
3 0
3 years ago
What is 50% of 150 =
Nady [450]
Yeah what they said
6 0
3 years ago
A) 31°<br> B) 42°<br> C) 53°<br> D) 149°
Korolek [52]

Answer:

C. 53°

Step-by-step explanation:

<l + 96° = 149° <exterior angle of a triangle is equal to the sum of two opposite interior angles>

< l = 149° - 96°

<l = 53°

Hope it will help :)❤

3 0
3 years ago
Read 2 more answers
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