Heidi and her family took a vacation. Heidi placed the hotel room charge of $689 on her credit card. She paid the minimum of $20
2 answers:
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To simplify this expression, we are going to combine like terms.
First, we can see that we have two terms with the variables being multiplied together,
and
. Together, these add to
, so our expression is now:
We also have two terms with ,
and
. Together, these add to
, so our expression is now:
Our final expression is xy - yz + 5.
Answer:
Step-by-step explanation:
Question:
Prove the following statement directly from the definitions.
The difference of any two rational numbers is a rational number.
Answer, see attachment for proof.
