What is the slope of a line that passes through 2,-8 and -2,2
1 answer:
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If 20% was taken off, that means that 35.96 is 80% of the original price.
35.96 =
Now, we just need to put it into fractions, cross multiply, and divide to find the original price.
35.96×100 = 3596
1×80 = 80
3596÷80 = 44.95
Now, to make sure, we multiply 44.95 by 20%,
44.95×0.20 = 8.99
Subtract that from 44.95
44.95-8.99 = 35.96
That is the sale price of the alarm clock.
This means that yes, the regular price of the mp3 alarm clock was
$44.95
35.96 =
Now, we just need to put it into fractions, cross multiply, and divide to find the original price.
35.96×100 = 3596
1×80 = 80
3596÷80 = 44.95
Now, to make sure, we multiply 44.95 by 20%,
44.95×0.20 = 8.99
Subtract that from 44.95
44.95-8.99 = 35.96
That is the sale price of the alarm clock.
This means that yes, the regular price of the mp3 alarm clock was
$44.95
Answer:
There is a 5.79% probability that at most 2 jelly beans are chosen.
Step-by-step explanation:
For each jelly bean chosen, there are only two possible outcomes. Either it is green, or it is not. This is why we use the binomial probability distribution to solve this problem.
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 we have that:
There are 13 jelly beans, so .
The probability that a green jelly bean is chosen at random from a large package of jelly beans is 2/5. This means that .
If Sally chooses 13 jelly beans, what is the probability that at most two will be green jelly beans?
This is
.
In which
So
.
There is a 5.79% probability that at most 2 jelly beans are chosen.