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Levart [38]
3 years ago
11

3-2/3= ? 2/3 is half

Mathematics
1 answer:
Helga [31]3 years ago
8 0
Exact form = 7/3

Decimal = 2.3

Mixed number Form = 2 1/3
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Mrs. Mack teaches three art classes, and there are 30 students in each class. She has a supply
lina2011 [118]

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Step-by-step explanation:

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Which matrix represents the system of equations shown below?<br> y = 5<br> 4x = 3
ivann1987 [24]

Answer:

\left[\begin{array}{ccc}1&0\\0&4\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}5\\3\end{array}\right]

Step-by-step explanation:

A matrix is an algorithm that has many applications. It is composed of a series of numbers (typically coefficients of variables) organized in a pattern. When dealing with a matrix, one must always remember the rule (rows by columns). One such application is that a matrix can facilitate the process by which one solves a system of equations.

When given the following system:

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4x = 3

One can see that not all of the equations have all variables in them. Yet, bear in mind that any number times zero is zero, therefore, one can rewrite the equation such that it has all of the variables if one ensures that the coefficient of the missing variable is (0).

y + 0x = 5

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Now organize this in the form of a matrix, the coefficients of the variable go in a (4 x 4) since there are now (4) elements. The variables are vertically arranged in a (2 x 1), and the equation results are also vertically arranged in a (2 x 1).

\left[\begin{array}{ccc}1&0\\0&4\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}5\\3\end{array}\right]

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Step-by-step explanation:

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We need to find the unit price of each box.

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Unitary method is a process to find the value of a single unit.

Now,

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So, the unit price of box 1 is $0.15.

Now, lets say the 20 Oz box is named box 2. Again we can use unitary method to find out the unit price of box 2.

Now,

20 Oz box costs $3.60

therefore, 1 Oz should cost:

\frac{3.60}{20} =0.18 dollars

So, the unit price of box 2 is $0.18.

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