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avatar+637 

Calvin wrote inequalities to compare the heights

 Aug 26, 2019
 #1
avatar+102913 
+2

A.  -10 > - 9      false

 

B.   1 > -18       true   [ a positive is always > a negative ]

 

C.  -25 > -30     true

 

D.  3 < -5      false

 

E.  -10 < 3       [ a negative is always < a positive ]

 

BTW.....the easiest way to solve these is to plot both values on a number line.......the number to the left is always smaller than the number to the right

 

 

cool cool cool

 Aug 26, 2019
 #2
avatar+637 
0

 

Students of the player 

macabresubwoofer  Aug 26, 2019
 #3
avatar+102913 
+1

P(being a junior)  =   [75] / [ 75 + 60  ] =   75 / 135  = 5/9

 

P (preferring volyball)  = [45] / [135]  = 1 / 3

 

P(being a junior and preferring volleyball )  =  25 / 135 = 5 / 27

 

So,  if independent

 

P( being a junior and preferring volleyball)  =  P( being a junior) x P( preferring volleyball)   

 

5 /27     =     5/9   x   1/3     ???

 

5/27   = 5/27

 

So.....independent   [answer D]

 

 

 

cool cool cool

 Aug 26, 2019

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