Lower Quartile value (Q1) is:
41
42
46
48
54
56
57​

Q1 =46

Step-by-step explanation:

Q1=(N+1)/4  (N means no of data)

=8+1/4

=9/4

=2.25

=2 nd term + (3 rd term - 2 nd term)

=44 +(46 - 44)

=44 + 2

=46

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

idk

step-by-step explanation:

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