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Naddik [55]
3 years ago
15

Topic: Matrix Row Reduction

Mathematics
1 answer:
Rainbow [258]3 years ago
5 0

Write the system as an augmented matrix:

\left[\begin{array}{cc|c}1&5&22\\4&-7&7\end{array}\right]

Add -4 (row 1) to row 2 :

\left[\begin{array}{cc|c}1&5&22\\0&-27&-81\end{array}\right]

Multiply row 2 by -1/27 :

\left[\begin{array}{cc|c}1&5&22\\0&1&3\end{array}\right]

Add -5 (row 2) to row 1 :

\left[\begin{array}{cc|c}1&0&7\\0&1&3\end{array}\right]

Then <em>x</em> = 7 and <em>y</em> = 3.

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2 years ago
Q3. In a hydraulic lift, a 1400 N force is applied to a 0.5 m2 piston. Calculate the minimum surface area of the large piston to
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Step-by-step explanation:

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P1/A1= P2/A2

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3 0
3 years ago
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Contact [7]

Answer:

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Mean of a sample = sum of the samples/no of the samples

Samples in increasing order:

9.8

9.8

9.9

10.1

10.4

10.6

11.1

Mode is the sample with highest frequency.

Median is the middle entry of the data.

Mean = (9.8 + 9.8 + 9.9 + 10.1 + 10.4 + 10.6 + 11.1)/7

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6 0
3 years ago
uppose that 10% of the population is taking a certain drug, and 30% of them suffer from migraines as a side effect. Supposing th
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Step-by-step explanation:

4 0
3 years ago
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