Of 120 students writing an exam, 100 are expected to pass. The estimated probability that a randomly selected student will fail the exam is

1/5 probability of selecting a student that will fail

Step-by-step explanation:

Given,

120-total students

100-pass

Find the amount that will fail,

total students - pass

-substitute in given values

120-100=20

20 students will fail

Proportion to find the probability,

(part/whole)

-substitute for situation

(fail/total students)

-substitute values

20/100

-simplify (÷20)

1/5

i can answer this if i have the answer choices

1. a^4+8a^3+24a^2+32a+16

2.y^8+8y^7+28y^6+56y^5+70y^4+56y^3+28y^2+8y+1

3.x^6-3x^4y^2+3x^2y^4-y^6