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nata0808 [166]
2 years ago
8

There are 5 different families of triplets at a triplets convention. Each triplet shook hands with all the other triplets, excep

t his or her siblings. How many handshakes took place?
Mathematics
1 answer:
Verizon [17]2 years ago
5 0

There is a total of 90 handshakes.

<h3>How many handshakes took place?</h3>

There are 5 sets of triplets.

If we select one of the sets, each of the triplets will have one handshake with the other 12 people. So we have 36 handshakes at this point.

Now we only care for the other 4 sets.

We select one set again, each triple on that set will have one handshake with the other 9 people, so for the 3 triplets, we have a total of 27 new handshakes.

For the remaining 3 sets we do the same, this time we add 18 handshakes.

Finally, there are 2 sets of triplets, this time we add 9 new handshakes.

To get the total number of handshakes we need to add them all:

36 + 27 + 18 + 9 = 90

There is a total of 90 handshakes.

If you want to learn more about additions:

brainly.com/question/25421984

#SPJ1

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natita [175]

Answer:  24, 24, 47

<u>Step-by-step explanation:</u>

In order to form a triangle, the sum of two sides must be GREATER than the third side for all combinations.

a + b > c       &       a + c > b        &        b + c > a

23 + 28 = 51 which is NOT greater than 55

15 + 30 = 45 which is NOT greater than  45

8 + 17 = 25 which is NOT greater than 25

24 + 24 > 47      &        24 + 47 > 24       &       24 + 24 > 27

all combinations are true so these side lengths can form a triangle

7 0
3 years ago
Find the missing value of the direct variation (2,5) (5,y)
Karolina [17]

Answer:

The missing value y=12.5 and we have (5,12.5)

Step-by-step explanation:

The formula used for direct variation is:

y\: \alpha \:x\\y=kx

We need to find missing value (2,5)(5,y)

First we will find k, and then y

We have x=2, y=5

Find k:

y=kx\\5=k(2)\\k=\frac{5}{2}\\k=2.5

Now, we cam find missing value in (5,y)

We have x=5, k=2.5 and y=?

y=kx\\y=2.5(5)\\y=12.5

So, the missing value y=12.5 and we have (5,12.5)

7 0
3 years ago
PLEASE HELP:) :( <br> What is the area of this Polygon? <br> Enter your answer in the box
BaLLatris [955]
7 x 5 = 35

1/2(7) x 2
3.5 x 2
7

35 + 7 = 42 Units squared
6 0
3 years ago
Paul purchased 3 video games for $17.25 each. Which expression is the best choice to help him determine the total amount of mone
mr_godi [17]

Answer:

The answer is C or (3) × (17.25) = 51.75; He spent $51.75.

Step-by-step explanation:

i say this because 17.25 time 3 equal 51.75

6 0
3 years ago
What is the factor of 16
insens350 [35]
1x16
2x8
is the answer
3 0
3 years ago
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