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3 years ago

Which of the following correctly completes the square for the equation below? x^2-9x=0

Mathematics

1 answer:

PolarNik [594]3 years ago

8 0

The answer to this question is choice B. To complete the square, we take the coefficient on the x term, halve it, and then square it. This results in -9/2, and then 81/4. This value of 81/4 is added to both sides, allowing for factorization of the lefthand side of the equation.

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Emma has 56 37⁄40 bags of dog food to feed all of the dogs at the animal shelter. The dogs each eat 81⁄4 bags of food per week.

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$\text{Answer: Number of weeks }=56$

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Since we have given that

$\text{Number of bags of dog food to feed all of the dogs at the animal shelter} =56\frac{37}{40}$ $\text{Number of bags of food per week eaten by dogs }= 8\frac{1}{4}$

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$\text{Number of weeks worth of dog food Emma have } =\frac{56\frac{37}{40}}{8\frac{1}{4}}$

$\text{Number of weeks worth of dog food Emma have }=\frac{2240\times 4}{40\times 4}\\\text{Number of weeks worth of dog food Emma have }=\frac{2240}{40}\\\text{Number of weeks worth of dog food Emma have }=56$

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