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maxonik [38]
3 years ago
5

Want Brainliest? Get this correct Which of the following is the quotient of the rational expressions shown below? Make sure your

answer is in reduced form.

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
4 0

Answer:

B.

Step-by-step explanation:

First, notice that we can cancel out an x in the second term. Thus:

\frac{3x^2}{x^2+x} =\frac{3x^2}{x(x+1)} =\frac{3x}{x+1}

As with the last question, change the sign to multiplication and "flip" the second term:

\frac{2x-1}{x+1}\cdot \frac{x+1}{3x}

Multiply straight across:

=\frac{(2x-1)(x+1)}{(x+1)(3x)}

Cancel the (x+1) term:

=\frac{2x-1}{3x}

Cannot be simplified further.

B.

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The snack shop makes 3 mixes of nuts in the following proportions.
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Answer:

A=\begin{bmatrix}6 & 5 & 3\\ 2 & 3 & 4\\ 2 & 2 & 3\end{bmatrix}

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Step-by-step explanation:

It is given that the snack shop makes 3 mixes of nuts in the following proportions.

Mix I: 6 lbs peanuts, 2 lbs cashews, 2 lbs pecans.

Mix II: 5 lbs peanuts, 3 lbs cashews, 2 lbs pecans.

Mix III: 3 lbs peanuts, 4 lbs cashews, 3 lbs pecans.

they received an order for 25 of mix I, 18 of mix II, and 35 of mix III.

We need to find the matrices A & B for which AB gives the total number of lbs of each nut required to fill the order.

                      Mix I             Mix II              Mix III

peanuts             6                  5                    3

cashews            2                  3                    4

pecans              2                   2                    2

A=\begin{bmatrix}6 & 5 & 3\\ 2 & 3 & 4\\ 2 & 2 & 3\end{bmatrix}

B=\begin{bmatrix}25\\ 18\\ 35\end{bmatrix}

The product of both matrices is

AB=\begin{bmatrix}6 & 5 & 3\\ 2 & 3 & 4\\ 2 & 2 & 3\end{bmatrix}\begin{bmatrix}25\\ 18\\ 35\end{bmatrix}

AB=\begin{bmatrix}6\cdot \:25+5\cdot \:18+3\cdot \:35\\ 2\cdot \:25+3\cdot \:18+4\cdot \:35\\ 2\cdot \:25+2\cdot \:18+3\cdot \:35\end{bmatrix}

AB=\begin{bmatrix}345\\ 244\\ 191\end{bmatrix}

Therefore matrix AB gives the total number of lbs of each nut required to fill the order.

8 0
3 years ago
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