Answer:
Step-by-step explanation:
given that on a six-question multiple-choice test there are five possible answers for each question, of which one is correct and four are incorrect
By mere guessing probability for choosing correct answer = p = 0.2
also each question is independent of the other
Hence if X is the number of correct questions then
X is binomial with p = 0.2 and n = 6
a) being correct on three questions,
=
(b) being correct on four questions,
= 
(c) being correct on all six questions
=
Answer:
3(7+5)
Step-by-step explanation:
21+15
Each term is divisible by 3
3*7 +3*5
3(7+5)
The car would travel 135 miles bc you multiply 81×5 and get 405 ,then divide that answer by 3
Amount borrowed, P = 13000
Interest, i = 0.07/12 per month
number of periods (months), n = 4*12 = 48
Monthly payment,


=
311.30 (to the nearest cent)