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Nikolay [14]
2 years ago
9

If seven people meet each other and each shake hands only once with each of the others, how many handshakes happened?

Mathematics
2 answers:
Andreas93 [3]2 years ago
4 0

Answer:

alright so every person shook 7 people's hands so 7x and there are 7 people so 7(7) and that is 49

Elenna [48]2 years ago
3 0
If it’s only 7 ppl you would have to double the amount of people meaning that 14 people shook each other’s hands but not quite cause they shook each other’s hands 7•14=98/4=25
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Find X. 2x + 15 = 20
lakkis [162]

Answer:

x = 5/2     or     x = 2.5

Step-by-step explanation:

To solve for x, we will have to get the equation 2x + 15 = 20 into the form x = _. That will be our answer.

2x + 15 = 20

Subtract 15 from both sides to get rid of the +15 on the left side.

2x = 20 - 15

Simplify.

2x = 5

Divide both sides by 2 to get rid of the coefficient of 2 on the left side.\

x = 5/2 = 2.5

x = 5/2   or    x = 2.5

I hope you find my answer helpful. :)

3 0
3 years ago
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Nadusha1986 [10]
The correct answer is 4. 
5 0
3 years ago
NEED HELP ASAP (ILL GIVE BRAINLIST)
strojnjashka [21]

Answer:

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Step-by-step explanation:

multiply the fractions

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7 0
2 years ago
Read 2 more answers
Each day her goal is to make 4 more baskets than she made thr day before. If she makes 10 baskets the first day and meets her go
irina [24]

Answer:

Janelle will make <u>62 baskets</u> on 14th day.

Step-by-step explanation:

Given,

Number of goals on 1st day = 10

We need to find the number of goals on 14th day.

Solution,

Since Janelle made 10 goals on 1st day and want to make 4 more basket from the day before.

So we can say that;

a_1=10   and    d=4

And also n=14

here a_1 = first term

d = common difference

n = number of terms

Now we apply the formula of A.P.

T_n=a_1+(n-1)d

now substituting the given values, we get;

T_{14}=10+(14-1)4\\\\T_{14}=10+13\times 4\\\\T_{14}=10+52 =62

Hence Janelle will make <u>62 basket</u> on 14th day.

7 0
3 years ago
What is the function for the arithmetic sequence 7,9,11,13,15,17
xeze [42]

Answer:


Step-by-step explanation: I would say y=x+2 or 2 because every number that you add 2 to, it gives you the solution which is the second number

Hope this helps!!!!

Please mark Brainliest!!!!!☺


5 0
3 years ago
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