Answer:
Therefore
and 
Step-by-step explanation:
Remember that if
= Identity Matrix
then
.
Also remember that for any invertible matrix
Identity Matrix.
Therefore

Therefore
and 
Answer:
B, C, E
Step-by-step explanation:
This is correct. Trust me.
Answer:
Letter:C
Step-by-step explanation:
<u>#CARRY</u><u> </u><u>ON</u><u> </u><u>LEARNING</u>
Answer:
$1,190
Step-by-step explanation:
$850(0.25) = 212.50
$850(0.15) = 127.50
$850+212.50= 1,062.50
1,062.50+127.50= 1,190
I'll help on 12. You know that 5*5 is 25. therefore what times 5 equals 20?