A teacher gave a 5 question multiple choice quiz. Each question had 4 choices to select
from. If the a student completely guessed
on every problem, what is the probability
that they will have less than 3 correct
answers? (CDF)

A) 0.088
B) 0.264
C) 0.896
D) 0.986

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

10 - 75

step-by-step explanation:

there's nothing attached so it's most likely anything in that range.

just pick what you think i need more time let me know if this

step-by-step explanation: