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EastWind [94]
3 years ago
8

You have 5 cups of birdseed. You use 3/5, cup of birdseed each day. How many days will your birdseed last?

Mathematics
1 answer:
german3 years ago
6 0

The bird seed will last for 8 days

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Factorize completely 3ac+6ab-15a​
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3a(c + 2b - 5)

Step-by-step explanation:

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A drawer contains quarters and nickels. There are 200 total coins valuing $30.00. Think about a system of equations that can be
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Answer:

100

Step-by-step explanation:

Let n and q represent the numbers of nickels and quarters, respectively. A suitable system of equations is ...

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For mixture problems like this, it is often a good idea to substitute for the variable representing the contributor of lower value. That is, we want to write an expression for n that we can use for substitution.

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<em>Comment on the solution</em>

We solved for q, then had to do an extra step to find the value of n that the problem asks for. Had we written q = 200-n and used that for substitution, we would have ended with the equation -20n = -2000. This would give the answer for n directly (with no additional steps required).

Sometimes working with negative numbers is uncomfortable or results in errors, so we chose to use the solution method that would avoid negative numbers.

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<em>Comment on the problem statement</em>

We are told about coins in a <u>drawer</u>, and we are asked about coins in a <u>jar</u>. There is not enough information to answer the question asked. We have had to assume that both refer to the same quantity of coins—an assumption that is not supported by anything in the problem statement.

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Solve the inequality 2x^2-6&gt;0
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Step-by-step explanation:

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