Waiting on the answer choices so i can answer your question :)
Answer:
Ratio is 1:3
Step-by-step explanation:
Given that a jewellery shop sells 240 necklaces in a month. 180 were sold via the shops website, the rest were sold in a high street shop.
We have to work out the ratio for online sales to shop sales
Total sales .. 240
Shop sale .. 180
Online sa .. 60
Hence ratio for online sales:shop sales
For this case we have the following polynomial:

We make the following change of variables:

Rewriting we have

Factoring the second order polynomial we have:

Then, returning the change we have:

Finally, we factor the expression in the parentheses of the second term:

Answer:
the completely factored form is:

Hey!
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LCD stands for Lowest Common Denominator.
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Explanation:
So let's say we have the equation 1/9 * 16/27
We want to find the LCD of both fractions. To find the LCD of both fractions find a the lowest common denominator in both fractions.
In this equation the lowest common denominator is 27 because 9 can go in 27 and 27 can go into itself. Se basically 27 is the lowest possibly common denominator both fractions can get to.
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Hope This Helped! Good Luck ;)
57 at 7.oo dollars is 399 so he bought 1 more at 1 dollar