Answer:
x<1
Step-by-step explanation:
2x+2<2(3x-1)
2x+2<6x-2
2x<6x-4
-4x<-4
x<1
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 
All the answers are on the image attached. there is no work cause i did mental math. the answer to the riddle is typed in yellow at the bottom of the picture
Answer:
36
Step-by-step explanation:
8x-20=5x+1
-5 -5
3x=-20+1
+20 +20
3x=21
3 3
x=7
8(7)-20
FED=36