# A level Maths

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#1
Just want to check my answer . Please tell me if its all right or if it is wrong. http://prntscr.com/16nc0bs
12a) x=0.15 y=0.4
12b) 0.85
12c) 0.5=0.7x0.55 0.5= 0.385 not independent
0
1 month ago
#2
Just want to check my answer . Please tell me if its all right or if it is wrong. http://prntscr.com/16nc0bs
12a) x=0.15 y=0.4
12b) 0.85
12c) 0.5=0.7x0.55 0.5= 0.385 not independent
Your answer to part c is strange. Where did 0.5 come from?

Also, you really don't want to be writing things like 0.5=0.385.
0
#3
(Original post by Plücker)
Your answer to part c is strange. Where did 0.5 come from?

Also, you really don't want to be writing things like 0.5=0.385.
Sorry is it meant to be 0.85?
0.85 not equal to 0.385 Not independant
0
1 month ago
#4
Sorry is it meant to be 0.85?
0.85 not equal to 0.385 Not independant
You need to compare and
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#5
(Original post by Plücker)
You need to compare and
sorry for the late reply, 0.4 = (0.4+0.3) x (0.15+0.4)
0.4=0.7x0.55
0.4=0.385 not independent as they are not the same .
Is this right now?
0
1 month ago
#6
sorry for the late reply, 0.4 = (0.4+0.3) x (0.15+0.4)
0.4=0.7x0.55
0.4=0.385 not independent as they are not the same .
Is this right now?
You've got the right numbers and the right conclusion now but you're still writing things like 0.4=0.385.
0
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