The table below shows the distribution of students by age in a high school with 1500 students. What is the probability that a randomly chosen student is
14 years old?

Age
13, 14, 15, 16, 17, 18
Number of Students
15,375,450,420,225,15

A. 0.15
B. 0.30
C. 0.28
D. 0.25

it is .28

Step-by-step explanation:

ayepexs

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)