The marks of the students in a certain examination are normally distributed with mean marks as 40% and standard deviation marks as 20%. On this basis 60% of students failed. The results was moderated and 70% of students passed . Find the pass mark before and after moderation​

pooopoopopoopop

step-by-step explanati∵∵∴∴on:

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

alaska, florida, nevada, south dakota, texas, washington and wyoming, tenessee and new hampshire.

step-by-step explanation:

the answer is

d.

5.3066 m2

step-by-step explanation: