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riadik2000 [5.3K]
3 years ago
5

If you take a class and have three marking periods in the class and in the first period your average grade was a 85.56 the secon

d marking period your average was a 60.57 and then for the final marking period your average was a 63.63 what will be your overall average?
Mathematics
1 answer:
Talja [164]3 years ago
3 0
69.92 when you add them all up and divide it you get 69.92
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So this has to do with permutations and honestly I need an explanation on how I can figure these out.
AnnZ [28]
Well, the answer quite simple ....there are 4! ways to arrange these numbers...and as 4! = 4*3*2*1 = 24

hence 24 is the correct answer....


u can also remember it by theorem of multiplication as.....in first place (I.e. first code can be any no. out of 4,5,2&7 ....so 4*.....

as first place is acquired by a certain no. that leaves three no. to fill third place and when third place I'd occupied it leaves 2 numbers to fill second place and lastly only one no. to fill the last place .....so it's result will be like 4*3*2*1.



I know this is pretty much confusing ....but still I tried my best....

if anything troubles u here feel free to ask me
6 0
3 years ago
Solve the following quadratic for the values x
mamaluj [8]

Answer:

x² + 6x - 27 = 0

x² + 9x - 3x - 27 = 0

x ( x + 9 ) - 3 ( x + 9 ) = 0

( x + 9 ) ( x - 3 ) = 0

Thus ,

x = -9 or x = 3

I hope it helps you

#Indian : )

8 0
3 years ago
Read 2 more answers
Someone help me please
Mazyrski [523]

Answer:

x = -7

Step-by-step explanation:

The whole line is 12

the whole line is also   x + 14  and  x + 12

  so make them equal:

      x+14     +      x +12     = 12  

       2x   + 26   = 12        now subtract 26 from both sides

               2x = - 14           now divide both sides by 2

                 x = -7

5 0
1 year ago
Read 2 more answers
How do you solve the indicated variable?<br> 6=mx+b for x
UkoKoshka [18]

6 = mx + b \\ 6 - b = mx \\  \frac{6 - b}{m}  = x
6 0
3 years ago
Read 2 more answers
BRAINLIEST!!! Can someone tell me how to graph inequalities?
3241004551 [841]

Answer:

whichever way the opening of the sign points go the opposite. if it is less than or equal to, closed circle

Step-by-step explanation:

>

the line would point this way -->

sorry if this doesnt help

8 0
3 years ago
Read 2 more answers
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