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Crank
2 years ago
13

20 people show up to a post-PSTAT 120A party. If everyone shakes hands with everyone else, how many handshakes take place

Mathematics
1 answer:
Ierofanga [76]2 years ago
7 0

Answer: There are 190 handshakes takes place.

Step-by-step explanation:

Since we have given that

Number of people in the party = 20

Here, n = 20

So, the number of handshakes would be

\dfrac{n(n-1)}{2}\\\\=\dfrac{20(20-1)}{2}\\\\=\dfrac{20\times 19}{2}\\\\=10\times 19\\\\=190

Hence, there are 190 handshakes takes place.

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Answer:

blue green and yellow

Step-by-step explanation:

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3 years ago
Need help with this. Please
kkurt [141]

Answer:

46

Step-by-step explanation:

6 times 2 is 12

23 times 2 is 46

5 0
3 years ago
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Tyler has to figure out the amount of metal to cover the back of the shelves in Mrs. Edwards room. These are the dimensions. Wha
horsena [70]

The amount of metal he will need to cover the back of the shelves is 180 inches².

The figure above is like a composite figure. Therefore, lets find the area.

<h3>Area of the composite figure</h3>

The area of the figure is the sum of the whole individual 2 dimensional shapes in the composite figure.

Therefore, two rectangles can be drawn from it.

area of rectangle = lw

where

l = length

w = width

Therefore,

area of rectangle 1 = 9 × 8 = 72 inches²

area of rectangle 2 = 6 × 18 = 108 inches²

Total area = 108 + 72 = 180 inches²

Therefore, the amount of metal he will need to cover the back of the shelves is 180 inches².

learn more on area here: brainly.com/question/25849553

4 0
2 years ago
If 2x^2+2x-8 is the quotient when x+3 divides P(x), which of th3 following is the quotient when 2x+6 divides p(x)?
maria [59]

Answer: A

2x^2+2x-8 is the quotient when x+3 divides P(x)

=> P(x) = (2x² + 2x -8)(x + 3) = 2(x² + x - 4)(x + 3) = (x² + x - 4) (2x + 6)

=> the quotient when 2x+6 divides p(x) is x² + x - 4

Step-by-step explanation:

7 0
2 years ago
What is 1/10 (3n+50)=35?​
antoniya [11.8K]

Answer:

100

Step-by-step explanation:

1/10(3n+50)=35

3n+50=35*10

3n+50=350

3n=350-50

3n=300

n=300/3

n=100

4 0
2 years ago
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