Question 55 Answer and Explanation _ACT December 2016 Form 74H Math Section

Question 55 Answer and Explanation _ACT December 2016 Form 74H Math Section

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55. What is the determinant of the matrix shown below?

$\begin{aligned}\begin{vmatrix} 8 & 3 \\ -5 & -2 \end{vmatrix}\end{aligned}$

A. 34

B. 4

C. –1

D. –25

E. –31

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

8×(-2)-3×(-5)=-1