Exercise 2.1.47 prove that ifa^-1 exists and ax=0 then x =0.

Step-by-step explanation:

If exist, then we have that .

Therefore, in the case that , if we multiply both

terms in the equation by , then we have

and so the equation tells us that

.

answer: jasmine will bake 4/3 or 1 1/3 cookies in an hour

step-by-step explanation:

if u add 1/3 every 15 minutes after an hour u will have 4/3 or 1 1/3