1.Mike buys an item with a price of $15 and uses a 10% off coupon. How much does he save by using this coupon?
1 answer:
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Answer:
Step-by-step explanation:
Put the equation in the form ax+by+c=0:
Check the solutions:
:
So this is not a solution.
(:
So this is a solution
Call the number of trumpet players "T" and the number of horn players "H".
We can use the given information to set up equations:
1."<span>the number of trumpet players is 4 times the number of French horn players"
2. "</span><span>There are 35 trumpet and French horn players in the band."
If you were asked to solve you could now do it by substitution:
</span>
We can use the given information to set up equations:
1."<span>the number of trumpet players is 4 times the number of French horn players"
2. "</span><span>There are 35 trumpet and French horn players in the band."
If you were asked to solve you could now do it by substitution: