12
10
-1
-2
Correct answer is D
\(0 \begin{vmatrix}7 & 8 \\5 & 4\end{vmatrix} -3 \begin{vmatrix}1 & 8 \\0 & 4\end{vmatrix} +2 \begin{vmatrix}1 & 7 \\0 & 5\end{vmatrix}\)
= 0(28 - 40) - 3(4 - 0) + 2(5 - 0)
= 0(-12) - 3(4) + 2(5)
= 0 - 12 + 10
= -2
In the diagram, XZ is the diameter of a circle's radius \(\frac{5}{2}\). If XY is 4cm, then the ...
In the diagram, PQ is a straight line. Calculate the value of the angle labelled 2y ...
Given: U = {Even numbers between 0 and 30} P = {Multiples of 6 between 0 and 30} Q = {Multiples o...
Solve for x in \(\frac{4x - 6}{3} \leq \frac{3 + 2x}{2}\)...
In the figure, find the value of x ...
A rectangle with width \(\frac{3}{4}\)cm and area 3 \(\frac{3}{8}\)cm\(^2\). Find the length...
Find the eleventh term of the progression 4, 8, 16........
If M and N are the points (-3, 8) and (5, -7) respectively, find |MN| ...
Evaluate \(\left(\frac{81}{16}\right)^{\frac{-1}{4}}\times 2^{-1}\) ...