Answer:
Step-by-step explanation:
This is a quadratic equation. We'll find the discriminant, but must first rewrite this equation in standard form:
5w2 – 2w + 4 = -4 + 4, or 5w^2 - 2w + 4 = 0
The coefficients of the w terms are {5, -2, 4}
and so the discriminant b^2 - 4ac is 4 - 4(5)(20) = -396
Because the discriminant is negative, we know that there will be two unequal, complex solutions.
Answer:
There is a 25.92% probability that exactly 4 of the selected adults believe in reincarnation.
Step-by-step explanation:
For each adult, there are only two possible outcomes. Either they believe in reincarnation, or they do not believe. This means that we can solve this problem using the binomial probability distribution.
Binomial probability distribution:
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
In which is the number of different combinatios of x objects from a set of n elements, given by the following formula.
And p is the probability of X happening.
In this problem
There are 5 adults, so
60% believe in reincarnation, so
What is the probability that exactly 4 of the selected adults believe in reincarnation?
This is P(X = 4).
There is a 25.92% probability that exactly 4 of the selected adults believe in reincarnation.
This is a pentagonal prism
- it has 6 faces
- 6 vertices
- 10 edges
Q1: For <u>30 minutes</u>, a person jogged <u>10 times</u> along the perimeter of a rectangular field at <u>12 kilometers per hour</u>. Find the square meters of the field if its length is <u>twice its width</u>.
Q2: A car is traveling at a speed of <u>75 kilometers per hour</u>. In one minute, how many meters does the car travel?
Q3: What is the length of <u>2000 millimeters</u> in inches? Round your answer to the nearest hundredth.
<em>Hope this helps =)</em>