<span>https://www.youtube.com/watch?v=wqz2W9QkpjY
hopefully this link will help</span><span />
Since a pound has 16 ounces, each ounce would cost 4 divided by 16, or 25 cents. 1.20 divided by .25 = 4 4/5. 4.8 ounces.
20n-n-11n =16
20n-12n=16
8n=16
n= 16/8
n=2
To solve this you first need to turn your mixed numbers into improper fractions. to do this for 
you multiply the denominator (5) by the whole number (9) to get 45 and then add that to the numerator (4) to get your new fraction 
.
You repeat this process with 
to get 
.
Now that you have two fractions you can multiply by the opposite reciprocal. To do this you flip the second fraction and change the division sign to a multiplication sign like so 
Then, you just multiply the fractions by multiplying the numerators to get 98 and multiplying the denominators to get 35.
Now, to simplify 
you first divide both the numerator and denominator by 7 to get 
.
Finally, you can take 10 out of the numerator to make 
The answer is true.
Point X lies on the line of intersection of planes S and R. This means that point X lies on both plane S and plane R at the same time.
You could also try and imagine the diagram without plane S and see that point X lies on plane R. Then you can imagine the same diagram without plane R and see that point X lies on plane S.
Let me know if you need any clarifications, thanks!
~ Padoru
