Answer:
(a) 0.6
(b) 0.3
(c) 0.9
Step-by-step explanation:
We are given that a pharmacist wishes to select three brands of aspirin to sell in his store. He has five major brands to choose from: A, B, C, D and E.
Total number of ways to select 3 brands from total of 5 = = = = 10 .
In all the three parts denominators remains at 10
(a) If he selects the three brands at random, the probability that he will select brand B = one brand B will be selected and other 2 brands will be selected from the remaining 4 brands i.e.
So, required probability = = = 0.6
(b) The probability that he will select the brands B and C = Two brands will be selected of B and C and one brand will be selected from remaining 3 brands i.e.;
So, required probability = = = 0.3 .
(c) The probability that he will select at least one of the two brands B and C
= 1 - Probability that neither of the three brands are from B and C
= 1 - Probability that all three brands are selected from the remaining
brands of A, D and E
= 1 - = = = 0.9 .
Answer:
8% off
Step-by-step explanation:
.2 off/2.5 total = 0.08
0.08 = 8%
Answer:
I think it's A because its a
a:
The side-side-side (SSS) theorem. It states that, if two triangles have the same side lengths, they are congruent.
b:
You should have three ovals saying:
- AB=A'B' (given)
- AC=A'C' (given)
- BC=B'C' (given)
These three ovals will point to the final oval, containing ABC=A'B'C', justified with "SSS"
c:
In this case, congruence implies similarity, so you don't have to change anything. In general, it is sufficient to prove that the three angles have the same measure to prove similarity, and this is not enough to prove congruence.