2 years ago

4. Which is the better value? Show your work and explain your choice.

Mathematics

1 answer:

Tems11 [23]2 years ago

3 0

Option B

I think its opinion B because its cheaper

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2 years ago

Solve using substitution.<br> x - 7y = 13<br> x + 4y = 2

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3 years ago

<img src="https://tex.z-dn.net/?f=y%20%3D%20x%20%7B%7D%5E%7B2%7D%20-%209x%20%2B%2014" id="TexFormula1" title="y = x {}^{2} - 9x

svetoff [14.1K]

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a = - $\frac{9}{2}$ , b = - $\frac{25}{4}$

Step-by-step explanation:

To obtain the required form use the method of completing the square

add/ subtract ( half the coefficient of the x- term)² to x² - 9x

y = x² + 2(- $\frac{9}{2}$ )x + $\frac{81}{4}$ - $\frac{81}{4}$ + 14

= (x - $\frac{9}{2}$ )² - $\frac{81}{4}$ + $\frac{56}{4}$

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2 years ago

Read 2 more answers