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Fofino [41]
3 years ago
6

I need help with solving this problem!!

Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
6 0

Answer:

14365

Step-by-step explanation:

If there are 170 people, total, then each one shakes hands with 169 other people.

You’d think that would mean 170 x 169 handshakes, or 28730. But each handshake counts twice, because two people are involved, right? So you need to divide that number by two.

(This works because handshaking is commutative — if I’m shaking your hand, then you’re shaking my hand. If we used some other action that was not commutative, such as giving a punch to the nose, then the answer would indeed be 28730.)

So take that number and divide it by two.

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Help me out, please!
VMariaS [17]

Answer:

y = 2/3(x - 3)

Step-by-step explanation:

slope of the line is 2/3

we can use point (3,0)

formula: y - y = m(x - x)

y - 0 = 2/3 (x - 3)

y = 2/3(x - 3)

5 0
3 years ago
PLZ HELP ASAP Geometry help: 2x^2 + 2y^2 - 8x +10y +2=0
Alexxx [7]
Ok so this is conic sectuion
first group x's with x's and y's with y's
then complete the squra with x's and y's


2x^2-8x+2y^2+10y+2=0
2(x^2-4x)+2(y^2+5y)+2=0
take 1/2 of linear coeficient and square
-4/2=-2, (-2)^2=4
5/2=2.5, 2.5^2=6.25
add that and negative inside

2(x^2-4x+4-4)+2(y^2+5y+6.25-6.25)+2=0
factor perfect squares
2((x-2)^2-4)+2((y+2.5)^2-6.25)+2=0
distribute
2(x-2)^2-8+2(y+2.5)^2-12.5+2=0
2(x-2)^2+2(y+2.5)^2-18.5=0
add 18.5 both sides
2(x-2)^2+2(y+2.5)^2=18.5
divide both sides by 2
(x-2)^2+(y+2.5)^2=9.25

that is a circle center (2,-2.5) with radius √9.25

6 0
3 years ago
Hey please answer soon i need this done soon! 20points!!!
Zepler [3.9K]

Answer:

<h3>consistent independent</h3>

<h2>Explanation:-</h2><h3>The system of linear equations {3x−y=2y=3x+2 describes <em><u>consistent </u></em><em><u>independent </u></em><em><u>.</u></em></h3>

<h3>Hope it is helpful to you </h3><h3>stay safe healthy and happy ☺️</h3>

4 0
3 years ago
Solve 2(3-a)=18 for a
Alinara [238K]

Answer:

a=-6

Step-by-step explanation:

2(3-a)=18

3-a=18/2

3-a=9

a=3-9

a=-6

7 0
4 years ago
Read 2 more answers
) Hiroki's goal is to collect $40 for a school fundraiser. He has already collected $26.50. Hiroki wants
mariarad [96]

Answer:

$13.50

Step-by-step explanation:

Subtract 40 from 26.50 to get the answer

6 0
3 years ago
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