Four friends shared 7 chocolate bars. Each of them was given an equal share of the chocolate bars. How many chocolate bars did each person get? A: 4/7
B : 6/8
C: 1 1/4
D: 1 3/4

A: 4/7

Step-by-step explanation:

If four friends shared four chocolate bars, each friend would get 4/4 chocolate bars, or 1 chocolate bar.

Similarly, in this question, four  friends share seven chocolate bars, so each friend would receive 4/7 chocolate bars.

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4 friends =7 chocolate

1 friend =7/4 chocolate =1 3/4 part of chocolate.

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.