Mr. Fletcher is looking at a 0.5 millimeter section of plant under a microscope.
The plant section appears enlarged by a scale factor of 10 when looking through the
microscope. He uses the camera on the microscope to photograph what is seen through
the lenses at a scale factor of 20. What is the length of the section of plant in the
photograph?

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.

r = 78539458390583095803458309458039485093485 or just 3

step-by-step explanation:

a

step-by-step explanation:

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft