Craig likes to collect vinyl records. Last year he had 10 records in his collection. Now he has 12 rerecords. What is the percen
2 answers:
Answer:
His collection increased in a 20%.
Step-by-step explanation:
<h3>We can solve this with the rule of three.</h3>If 100% represents 10 records, what percentage would be for 12 records?
So, if we subtract , it's gonna result in a difference of 20%, which means that 12 represents a 20% more, or his collection increased in a 20%.
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Answer:
Step-by-step explanation:
So we have the expression:
To simplify, simply combine the like terms. Therefore:
Further notes:
To understand why we can combine like terms in the first place, we just need to use the distributive property. So we have the expression:
Now, factor out a y from the three terms:
Do all the operations inside the parenthesis:
And we moved the y back to the front!
This is the same result as before. When combining like terms, this is what we're essentially doing but without doing the distributive property manually. I hope you understand a bit better on how and why we can combine like terms!