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nydimaria [60]
3 years ago
14

2/3 of all the people who attended a certain party arrived by 8:00 PM. How many people arrived by 8:00 PM?

Mathematics
1 answer:
andreev551 [17]3 years ago
4 0

Answer:

a) How many people who attended a certain party arrived by  8 PM           60 people

Step-by-step explanation:

2/3 of all people who attended a certain party arrived by  8 P.M . That means that  1/3  arrived in other time. But  2/3  +  1/3 is total number of people in the party.

1) 9 people arrived after 9 PM

And in 2

2) .... By 9 .00 PM  90 % of people were already in the party and. That means

that 9 people who arrived after are 10 %

Then if      9  people are    10 %

                 x   people are   100%

x  =  (100*9)/10      ⇒   x  =  900/10

x =  90

Here we got total number of people in the party  90

Then    2/3 of   90     is    180/3       60

1/3  0f  90      is   30

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An item that cost $5.50 is marked up %60. What is the new price of the item after the markup? Show work please​
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Step-by-step explanation:

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8 0
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Please help me with this problem it is for my Geometry class.
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Select "ALL" that are right
Leokris [45]
<h3>Answer:</h3>

These steps <em>can</em> be used:

  • combine -6 and 4
  • combine 15 and -3
  • multiply 2 by x and -2
<h3>Step-by-step explanation:</h3>

The equation could be solved as follows:

  2(x -6 +4) = 15 -3                 given

  2(x -2) = 15 -3                      combine -6 and 4

  2(x -2) = 12                          combine 15 and -3

  2x -4 = 12                            multiply 2 by x and -2

  2x = 16                                add 4 to both sides

  x = 8                                    divide both sides by 2

_____

<em>Alternate solution</em>

At step 4, you could have

  x -2 = 6                              divide both sides by 2

  x = 8                                   add 2 to both sides

5 0
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