Determine which of the following formulas hold for all invertible ×n×n matrices A and B. 1. =AB=BA 2. +A+B is invertible 3. (+)2=2+2+2(A+B)2=A2+B2+2AB 4. (+)(+−1)=2++−1(I+A)(I+A−1)=2I+A+A−1 5. (−)(+)=−2(I−A)(I+A)=I−A2 6. ()−1=−1−1(AB)−1=A−1B−1 7. 3A3 is invertible 8. (−1)3=3−1(ABA−1)3=AB3A−1 9. −1=ABA−1=B 10. (+)(−)=2−2

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

The volume, v, of a rectangular prism is determined using the formula, where / is the length, w is the width, and his theheight of the prism. carltren solves for w and writes the equivalent equation w=using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches, and a length of 3.2 inches?