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3 years ago

Evaluate the difference between 40.3 and 2.27.

Mathematics

2 answers:

Misha Larkins [42]3 years ago

6 0

liubo4ka [24]3 years ago

4 0

Answer:

38.03.

Step-by-step explanation:

We are asked to Evaluate the difference between 40.3 and 2.27.

Upon converting our given problem as a subtraction problem, we will get:

40.30

-<u> 2.27</u>

Upon subtracting our given numbers, we will get:

40.30

-<u> 2.27</u>

Therefore, the difference of our given numbers is 38.03.

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2 years ago

Solve the linear eqvations by matrix inversion method 2x -2y = 4 , 3x + 2y = 6

Alex73 [517]

Answer:

The answer is below

Step-by-step explanation:

A linear graph has an equation of the form:

y = mx + b,

where y and x are variables, m is the slope (rate of change) of the graph and b is the y intercept (value of y when x is 0).

Given that:

2x -2y = 4 , 3x + 2y = 6

The matrix form of the equation is:

AX = B

$A=\left[\begin{array}{cc}2&-2\\3&2\end{array}\right] ,X=\left[\begin{array}{c}x\\y\end{array}\right] ,B=\left[\begin{array}{c}4\\6\end{array}\right] \\\\Therefore:\\\\\left[\begin{array}{cc}2&-2\\3&2\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{c}4\\6\end{array}\right] \\\\\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{cc}2&-2\\3&2\end{array}\right]^{-1} \left[\begin{array}{c}4\\6\end{array}\right] \\\\$

$\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{cc}0.2&0.2\\-0.3&0.2\end{array}\right] \left[\begin{array}{c}4\\6\end{array}\right] \\\\\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{c}2\\0\end{array}\right]$

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3 years ago