1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Crank
3 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]3 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.

You might be interested in
20. The perimeter of a square is 72 in. What is its area?
ivanzaharov [21]

The formula for perimeter is length + length + width + width

You know that all the sides of a square are equal to each other. That means that all the values in the perimeter formula should be the same. Therefore you can divide 72 by 4 (perimeter divided by the number of sides)

72 / 4 = 18

^^^Each side is 18 in

The formula for are is...

A = length x width

so...

18 * 18 = 324

324 in^2

Hope this helped!

~Just a girl in love with Shawn Mendes

6 0
3 years ago
If a triangle is 4 feet on one side, 6 feet on another side, what is the measurement of the third side?
tino4ka555 [31]
It depends on what type of Triangle or what the volume or area is. This question is missing information.
7 0
3 years ago
What is the value of x in the equation 4(2x + 10) = 0? (1 point)
miskamm [114]

Answer:

x = -5

Explanation:

4(2x + 10) = 0

[ Simplify both sides of the equation ]

4(2x + 10) = 0

(4)(2x) + (4)(10) = 0 [Distribute]

8x + 40 = 0

[ Subtract 40 from both sides ]

8x + 40 − 40 = 0 − 40

8x = −40

[ Divide both sides by 8 ]

8x  / 8 = −40 / 8

x = -5

4 0
3 years ago
En una tienda de ropa vas a comprarte una pantalones que están de 150 a 90 euros y una camiseta de 40 a 24 ¿ tienen el mismo por
uranmaximum [27]

Respuesta:

Sí, tienen el mismo descuento del 40%

Explicación paso a paso:

Dado :

PANTALÓN :

Precio inicial = 150

Precio con descuento = 90

Porcentaje de descuento en el precio:

(150 - 90) / 150 * 100%

60/150 * 100%

0,4 * 100

= 40%

CAMISA:

Precio inicial = 40

Precio con descuento = 24

Porcentaje de descuento en el precio:

(40-24) / 150 * 100%

16/40 * 100%

0,4 * 100

= 40%

Sí, tienen el mismo descuento del 40%

8 0
3 years ago
2x + y = 4<br> y = 32 – 1<br> Is (1, 2) a solution to both equations?
Digiron [165]

Answer:

No

Step-by-step explanation:

y = 32 – 1 is  not true to (1,2) because y=2 and 2 does not equal 31.

6 0
3 years ago
Other questions:
  • The endpoints of one diameter of a circle are (9,3) and (-5,15). What is the center of the circle?
    14·1 answer
  • Which number can each term of the equation be multiplied by to eliminate the fractions before solving?
    15·1 answer
  • Let M = 925,474.85732. Find the smallest power of 10 that will exceed M.
    5·1 answer
  • Sierra says that she can simplify the left side of the inequality 2(-3+ 5) + 22 -4(x- 2)- 3 by combining the terms within the pa
    11·1 answer
  • X + y = 4 x - 2y = -5 If the first equation is multiplied by 2 and then the equations are added, the result is _____.
    10·2 answers
  • You are in “Car Parts USA” buying some headlight bulbs. The original price is $19.99, but you have a coupon for $6.00 off. What
    9·1 answer
  • Which would NOT be found in the set of rational numbers? A. 5 B. 1/2 C. -12.5 D. 1.61803398874989484820​
    14·1 answer
  • Product A is an 8oz bottle of cough medication that sells for $1.36. Product B is a 16oz bottle of cough medication that cost $3
    11·1 answer
  • Choose the correct answer choice.
    5·1 answer
  • PLEASEEE HELP ME ASAP (WITH EITHER OF THEM)!!!! thank you so so much!!!!! *will give brainliest*
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!