Answer:
Step-by-step explanation:
It asks for the common set of A and B.
<u>There only one element common to both the given sets:</u>
- A={2,3,5,7} and B={2,4,6,8} ⇒ A∩B = {2}
well, clearly the LCD from the denominators of 5 and 10 is just 10, thus
![\bf \stackrel{\textit{Sue}}{\cfrac{2}{5}}+\stackrel{\textit{Sally}}{\cfrac{4}{10}}\implies \stackrel{\textit{LCD of 10}}{\cfrac{(2)2~~+~~(1)4}{10}}\implies \cfrac{2+4}{10}\implies \cfrac{6}{10}\implies \stackrel{\textit{simplified}}{\cfrac{3}{5}}](https://tex.z-dn.net/?f=%5Cbf%20%5Cstackrel%7B%5Ctextit%7BSue%7D%7D%7B%5Ccfrac%7B2%7D%7B5%7D%7D%2B%5Cstackrel%7B%5Ctextit%7BSally%7D%7D%7B%5Ccfrac%7B4%7D%7B10%7D%7D%5Cimplies%20%5Cstackrel%7B%5Ctextit%7BLCD%20of%2010%7D%7D%7B%5Ccfrac%7B%282%292~~%2B~~%281%294%7D%7B10%7D%7D%5Cimplies%20%5Ccfrac%7B2%2B4%7D%7B10%7D%5Cimplies%20%5Ccfrac%7B6%7D%7B10%7D%5Cimplies%20%5Cstackrel%7B%5Ctextit%7Bsimplified%7D%7D%7B%5Ccfrac%7B3%7D%7B5%7D%7D)
The answer is 2/1, I think. :)
Some textbooks describe direct variation by saying " y varies directly as x ", " y varies proportionally as x ", or " y is directly proportional to x . ") This means that as x increases, y increases and as x decreases, y decreases—and that the ratio between them always stays the same.
6 weeks.
The equation for each is:
68 + 5x
25 + 12x
To show work I reccomend making a table:).
I also reccomend usijg a graphic calculator if it is available.
If not then plug in numbers into the variables by using estimates.