Mathematics, 03.07.2019 18:30, brandonleekenyon
Let r be a communtative ring and a, b elements in r. prove that if a and b are units, then so is ab. what can we say about ab when a is a unit and b is a zero divisor? prove your claim.
Answers: 1
Mathematics, 21.06.2019 22:30, cbkhm
Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?
Answers: 1
Let r be a communtative ring and a, b elements in r. prove that if a and b are units, then so is ab....
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