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- Hannah ❤
It could be represented by this:
Hope This Helps You!
Good Luck :)
- Hannah ❤
How many pounds of a 15% copper alloy must be mixed with 700lb of a 30% copper alloy to make a 25.5% copper alloy?
1 answer:
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Answer: C: 12-7x
Step-by-step explanation:
This expression is a good example of the difference of two squares, as 144 is the square of 12, while 49x² is the square of 7x.
Any difference of two squares can be factored into the sum of their square roots times the difference of their square roots
.
Let's factor our expression.
Out of all the options given, only is a factor. Hence, option C is correct.