There is an infinite amount of fractions equivalent to the one given. All you have to do to find a fraction equivalent is multiply the numerator and denominator by the same number, and when you get the resulting fraction it can be simplified to become the original again, therefore making it the same.
Answer:
A,D,E
Step-by-step explanation:
scaled copy means the ratio of the two lengths would be same proportional constant.
The proportionality constant for Rectangle A is:
12/3 = 4
So any scaled version will have this proportionality constant same (4).
let's check:
A) 6/1.5 = 4 (OK)
B) 10/2 = 5 (NOT OK)
C) 13/4 = 3.25 (NOT OK)
D) 18/4.5 = 4 (OK)
E) 80/20 = 4 (OK)
So, correct options are A, D, and E
Answer:
5/18, 13/18
Step-by-step explanation:
The basic probability of anything is Specific Outcome / Total Outcomes
The specific outcome here is pulling a purple marble. We see there are 5 purple marbles therefore there are 5 ways to get them. The total outcomes are the total number of marbles which is 18. Therefore, the answer is 5/18
The complement of a probability is 1 minus the original probability, so, it would be 1 - 5/18 here getting us 13/18 as the answer.
Answer:
The probability that someone who tests positive actually has the disease is P(S|T)=0.43
Step-by-step explanation:
A pharmaceutical company has developed a test for a rare disease that is present in 0.5% of the population.
The test is 98% a positive result and the chance of a false positive is 7%
<h3>To find the probability that someone who tests positive actually has the disease:</h3>
Let S be the event that the rare disease present
P(S)=0.05 and
Let T be the event that the test is positive
P(T)=0.98
Then we have to find the Conditional probability :
By using the formula for Conditional Probability is
=0.4294
=0.43
<h3>
∴ P(S|T)=0.43</h3>