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3241004551 [841]

3 years ago

6

Shawn wants to buy a pair of polo boots they cost 149.56 he must earn 65% of the money from shoveling snow how much money does h

e have to earn ?

1 answer:

schepotkina [342]3 years ago

6 0

Answer:

97.214

Step-by-step explanation:

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In basketball you can earn three points for a shot and 1 point for a free-throw if Sam’s probability of getting a three point sh

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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