30 former classmates gathered to celebrate the anniversary of their school graduation. Each of them greeted and shook hands with every other without any exceptions how many handshakes were exchanged when everyone was finished?Note: When person A shakes with person B, person B is also shaking with person A. It is counted as one handshake.
Answers
That person shakes hands with 29 other classmates.
Take another person different from the first, we'll call him the 'second'. Since he has already shaken hands with the first, he shakes hands with 28 other classmates.
The 'third' person will likewise shake hands with 27 other classmates, and so on.
Hence, the total number of handshakes is 29+28+27+...+2+1 = 29*30/2=435 handshakes
The answer is 435 handshakes when everyone was finished. I hope this is correct.
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All you need to know is that 15 is the fifth odd number,
and you need the third odd number.
So the one you want is 2 odd numbers back from 15. That's 11 .
Answers
This means that
This year my salary is: 105% ( up 5% from 100%) ;
Salary = $31500
and last year. 100% ( base year) ; Let the Salary = $x
Now let us solve,
x / 100 = 31500/105
so x = 31500 * 100/105 =
$30 000
I hope my answer helped you I've included the formula on how I got the answer.
subtract the answer from this years salary
38325
- 1916.25
that would be 36408.75
now add comma and dollar sign and last year's salary is $36,408.75
Answers
First, expand to remove parentheses.
Second, subtract 17x - 9x to get 8x.
Third, add 36 to both sides.
Fourth, simplify.
Fifth, subtract 3x from both sides.
Sixth, subtract 8x - 3x.
Seventh, divide both sides by 5.
Eighth, since 2 goes into 5 to get 10, simplify the fraction to 2.
Answer: x = 2
Answers
-1 = -1
0 = 1
2 = 5
would Mike pay for the bike, before taxes, once the
discount was applied?
A. $85.50
B. $199.50
C. $315.00
D. $370.50
Answers
Answer:
B
Step-by-step explanation:
285 × .30 = 85.50
285 - 85.50 = 199.50
Answers
x + 2 > 5
x > 3
Answer is the 2nd option
x + 2 > 5; x > 3
it is c im 100% sure