Answer:
The fair price for this game is $372.5
Step-by-step explanation:
Let's start by calculating the expected value for this game.
Let's call X to the random variable : ''The earnings for this game''
We calculate E(X) by multiplying the probability of the random variable assuming the value ''xi'' by the prize for ''xi'' and adding for all its values.
There is a total of 8 prizes.
4 prizes out of a total of 8 worth $20.
3 prizes out of a total of 8 worth $300
1 prize out of a total of 8 worth $2000.
$372.5
The expected value for X is $372.5
Therefore, its reasonable set the ''fair price'' in $372.5 for this game.
Answer:
They are equal.
Step-by-step explanation:
I calculated 76 ÷ 12 and got 6.33333333333. (I think)
The value of t is (D) 55/9.
<h3>
What is an equation?</h3>
- An equation is a formula in mathematics that expresses the equality of two expressions by connecting them with the equals sign =.
- The word equation and its cognates in other languages may have subtly different meanings; for example, in French, an équation is defined as containing one or more variables, whereas in English, an equation is any well-formed formula consisting of two expressions linked by an equals sign.
To find the value of t:
Given -
- (t+5)/(t-5) = 10
- t+5 = 10(t-5)
- t+5 = 10t - 50
- 10t - t = 5 + 55
- 9t = 55
- t = 55/9
Therefore, the value of t is (D) 55/9.
Know more about equations here:
brainly.com/question/2972832
#SPJ4
Answer:
5 Green earrings
Step-by-step explanation:
Given that:
Total amount held = $51
Cost per pair of green earrings = $9
One time shipping fee = $6
How many pairs of green earrings did grace purchase?
Let the number of green earrings purchased = g
Then,
$9*g + $6 = $51
$9g + $6 = $51
$9g = $51 - $6
$9g = $45
g = $45 / $9
g = 5
Hence, the number of green earrings purchased = 5