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2 years ago

Caculate the meadin of the following data, 18,22,20,21,23. Pls help Im dum and the paper is due in a couple of hourssssss

Mathematics

1 answer:

irga5000 [103]2 years ago

6 0

<h2>Answer:</h2>

<u>First, Arrange the data in ascending order</u>

=> 18, 20, [21], 22, 23.

<u>Now, Find the middle term i.e, 21.</u>

<u>Hence, Median of the given data is 21</u>.

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Which of the following matrices is the solution matrix for the given system of equations? x + 5y = 11 x - y = 5

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<h2>The required solution is x = 6 and y = 11 </h2>

Step-by-step explanation:

Given system of equations are

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$A^{-1} ={ \left[\begin{array}{c \c} {{\frac{1}{6} }}&{\frac{5}{6}}\ \\ {{\frac{1}{6} }}&{\frac{-1}{6}} \end{array}\right]}$

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⇒ $\left[\begin{array}{c}x\\y\end{array}\right] ={ \left[\begin{array}{c \c} {{\frac{1}{6} }}&{\frac{5}{6}}\ \\ {{\frac{1}{6} }}&{\frac{-1}{6}} \end{array}\right]} \times \left[\begin{array}{c}11\\5\end{array}\right]$

⇒ $\left[\begin{array}{c}x\\y\end{array}\right] ={ \left[\begin{array}{c} {6}\\ {11} \end{array}\right]}$

∴ x= 6 and y = 11

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