Merry and bright? a string of christmas lights con-
tains 20 lights. the lights are wired in series, so that
if any light fails, the whole string will go dark. each
light has probability 0.98 of working for a 3-year
period. the lights fail independently of each other.
find the probability that the string of lights will
remain bright for 3 years.

0.6676

Step-by-step explanation:

given that A string of Christmas lights con-

tains 20 lights. The lights are wired in series, so that

if any light fails, the whole string will go dark. Each

light has probability 0.98 of working for a 3-year

period.

Each light is independent of the other.

The probability that the string of lights will

remain bright for 3 years.

= Probability that each light does not fail

= multiplication (prob of one light does not fail)

=

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.

16.9 times 2.85

step-by-step explanation: