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ASHA 777 [7]
4 years ago
10

What is the determinant of the coefficient matrix of the system

Mathematics
1 answer:
Romashka [77]4 years ago
7 0

All of the z coefficients are zero. This means that the matrix will have a column full of zeroes:

\left(\begin{array}{ccc}4&-6&0\\3&3&0\\2&-12&0\end{array}\right)

And every time a matrix has a row/column full of zeroes, its determinant is zero.

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If PQR = STU, find the measure of each part.
alina1380 [7]

The answer is below

Step-by-step explanation:

Two triangles are said to be congruent if for the two triangles all the three sides are equal and all the three angles are equal to each other.

Given that ΔPQR is congruent to ΔSTU, hence all corresponding sides and corresponding angles are equal to each other.

∠P = ∠S = 59°

∠S + ∠T + ∠U = 180° (sum of angles in a triangle)

59 + 75 + ∠U = 180°

134 + ∠U = 180°

∠U = 46°

∠U = ∠R = 46°

∠Q = ∠T = 75°

Also, for the sides:

ST = PQ = 7 m

SU = PR = 8 m

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Harrizon [31]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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