4) A lot consists of 10 good articles, 4 with minor defects and 2 with major defects. i. One article is chosen at random. Find the probability that:
a) It has no defect
b) It has no major defects
c) It is either good or has major defects
ii. Two articles are chosen (without replacement) at random, find the probability that:
a) Both are good
e) Exactly one is good
b) Both have major defects
f) Neither has major defects
c) At least one is good
g) Neither is good
d) At most one is good

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

i think the amount would be $140.62

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3

i think the answer would be c