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3 years ago

HELP DUE IN 10 MINS!

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

5 0

Answer:

DU = 34

QU = 30

Step-by-step explanation:

DU = 34 since the diagonals of a rectangle are congruent, Diagonal QA would be 17 * 2 and so would be Diagonal DU.

QU = 33.045, according to me the base of a triangle;

b = $2\sqrt{l^2-h^2}$ , height would be half the length of QD = 8

b = 2 $\sqrt{17^2 -8^2}$

b = 30

Hope this helps!

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Apply $R_3\rightarrow R_3+R_2$

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Apply $R_3\rightarrow- \frac{1}{2}$ and $R_2\rightarrow R_2-R_3$

$\left[\begin{array}{ccc}1&0&1\\0&1&0\\0&0&1\end{array}\right]$ : $\left[\begin{array}{ccc}-5\\\frac{13}{2}\\-\frac{1}{2}\end{array}\right]$

Apply $R_1\rightarrow R_1-R_3$

$\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]$ : $\left[\begin{array}{ccc}-\frac{9}{2}\\\frac{13}{2}\\-\frac{1}{2}\end{array}\right]$

Rank of matrix A and B are equal.Therefore, matrix A has infinite number of solutions.

Therefore, rank of matrix is equal to rank of B.

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