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3 years ago

If it costs 1.85 dollars to rent 3 books at the library, how much would cost to rent 51 books?

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

4 0

sorry don't know....

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3 years ago

Im confused about this darn question can someone please solve it for me

n200080 [17]

Answer: The answer is A : 6x^2+24x+24

Step-by-step explanation:

(2x+4)(3x+6)

multiple the two equations together

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6x^2+24x+24

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3 years ago

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2 years ago

What is<br>12.5% of 200?

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3 years ago

Read 2 more answers

Please help: linear algebra problem. (Linear combinations)

DochEvi [55]

Answer:

$\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right] \left[\begin{array}{ccc}c\\d\end{array}\right] =\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

This tells us that:

$A=\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right]$

$b=\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

Step-by-step explanation:

So we are saying we have scalars, c and d, such that:

$c\left[\begin{array}{ccc}5\\5\\ 3\end{array}\right]+d\left[\begin{array}{ccc}7\\-8\\-9\end{array}\right]=\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$ .

So we want to find a way to express this as:

Ax=b where x is the scalar vector, $\left[\begin{array}{ccc}c\\d\end{array}\right]$ .

So we can write this as:

$\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right] \left[\begin{array}{ccc}c\\d\end{array}\right] =\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

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3 years ago