Let 6 30 43 A: -1 -1 1 5 25 35 (a) Compute det(A) = (b) Use Cramer's rule to solve the following system 6x130x2 + 43x3 -1 - -21 22 + x3= 2 5x125x2 + 35x3 = 5 1: 2. 42 =x2 = 9. 31 9.

College Algebra (MindTap Course List)
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Chapter6: Linear Systems
Section6.CT: Chapter Test
Problem 20CT
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Let
6
30 43
A
=
-1
-1 1
5
25 35
(a) Compute det(A) =
(b) Use Cramer's rule to solve the following system
6x1
-x1
5x1
+302
+43 x3 =
-1
-
x2
+
x3 =
2
+252
+ 35x3 =
5
x11
9.
x2=
9.
x3 =
Transcribed Image Text:Let 6 30 43 A = -1 -1 1 5 25 35 (a) Compute det(A) = (b) Use Cramer's rule to solve the following system 6x1 -x1 5x1 +302 +43 x3 = -1 - x2 + x3 = 2 +252 + 35x3 = 5 x11 9. x2= 9. x3 =
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