Which statement is true about the data point 84?
The graph shows a distribution of data with a standard
deviation of 6.
It is within 1 standard deviation of the mean.
It is within 2 standard deviations of the mean.
It is exactly 3 standard deviations from the mean.
It is exactly 4 standard deviations from the mean.
60
63
66
69
72 75
78
81
84
87
90 x
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solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

total of apples - take away four

6-4 = 2

answer is 2 apples

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12