Let X be the event that a person chosen at random from anywhere on earth will live in Africa, What is P (X)?
Continent
Africa
North
America
South
America
Asia
Europe
Oceania
Population
distribution
0 23
0.23
0.08
0.06
0.55
0.07
0.01
Data from US Census Bureau 2011
77
0.23
23
00

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.

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

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step-by-step explanation:

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