Answer:
-4
Step-by-step explanation:
Answer:n=-2 or n=4
Step-by-step explanation:
Q is not inversible if det(Q)=0

Answer:
5√3 / 2
Step-by-step explanation:
tan 30 = ( 5 / 2 ) / y
1 / √3 = 5 / 2y
2y = 5√3
y = 5√3 / 2
I apologize, but we would need the chart included below the questions to be able to answer this.
Answer: 126
Step-by-step explanation: 14 x 9 is 126, so its 126!!