A high school math class has 28 students: 18 seniors and 10 juniors. What is the probability that four randomly selected students will be seniors? A) 0.15

B) 0.17

C) 0.22

D) 0.64

64%

Step-by-step explanation:

18/28=0.642857143 which rounds to 0.64

0.64 is 64 hundredths so 64/100 or 64%

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.