Pick the expression that matches this description A 3rd degree binomial with a constant term of 8
Choose 1

(Choice A)
A
2x^8+3

(Choice B)
B
8x^3+2x+3

(Choice C)
C
x^3-x^2+8

(Choice D)
D
-5x^3+8

13cm

step-by-step explanation:

(apex)

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source:  

3/8