Answer:
$2.25
Step-by-step explanation:
A dozen = 12 eggs = $1.50
1 egg = 1.5 / 12 = 0.125
18 eggs = 0.125 * 18
= <u>$2.25</u> = 1 1/2 dozen
First, we need to convert all the fractions to have the same denominator. 10 and 25 are both multiples of 100, so 100 would be appropriate.
Sam has a 7/25 chance. Because we want ?/100, something needs to change. To get from 25 to 100, you need to times 25 by 4, right? So, do the same with the 7.
7 x 4 = 28. Therefore Sam has a 28/100 chance.
Sue has 3/10. Using the same method, we can see that 3 needs to be multiplied by 10 (because 10 times 10 = 100). So Sue has a 30/100 chance.
Tom is already in the fraction we like, so just keep this as 21/100.
Now, add 28/100, 30/100 and 21/100 to get 79/100.
Because won of them will get the role of class president, we know that the probability adds to 1. To get a full probability (100/100, or 1), what needs to be added to 79/100?
Another way of going about this is 100/100-79/100. The answer is 21/100
The probability of Liz winning is 21/100.
Let me know if this is still unclear, I would be more than happy to explain in more detail if necessary :)
I think the answer is either C. or D., but my best guess would be D.
Answer:
Step-by-step explanation:
If Q is the midpoint of PR and PQ is 19, that means that QR is also 19 and the total length of PR is 38. Therefore,
PQ + QR = PR and
19 + 19 = 8x + 14 and
38 = 8x + 14 and
24 = 8x so
x = 3
Your choice is C
