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notka56 [123]
3 years ago
10

Yesenia swims laps at a pool. For every 10 laps she swims the backstroke, she swims 15 laps of freestyle. Which ratio shows the

number of laps Yesenia swims the backstroke to the number of laps she swims freestyle?
Mathematics
1 answer:
Orlov [11]3 years ago
8 0

Answer:

2 3

Step-by-step explanation:

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Explanation:

Let's consider the expression (x-y)^2. It expands out to x^2-2xy+y^2. The terms are:

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Each of those terms either has a single variable with an exponent of 2, or has the exponents add to 2. Think of 2xy as 2x^1y^1.

In short, this means that the degree of each monomial term is 2.

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Now consider (x-y)^3. It expands out into x^3-3x^2y+3xy^2+y^3.

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This pattern continues.

In general, for (x-y)^n, where n is any positive whole number, the degree of each term in the expansion is n. If you picked any term, added the exponents, then the exponents will add to n.

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Step-by-step explanation:

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