Answer:
A. 34
Step-by-step explanation:
Answer:205
Step-by-step explanation:
Explanation:
Since m is a unit in S, then, there exists b ∈ S such that m*b = 1, where 1 is the identity. Since S is a subring of R we have that m ∈ R, and therefore b is also the multiplicative inverse of m in R. The converse isnt true.
The set of real numbers is a Ring with the standard sum and multiplication. Every real number different from 0 has a multiplicative inverse. For example, the inverse of 2 is 1/2. However, 2 is not a unit on the subring of Integers Z.
The answer to the question is 3 or C, 5/3
The measure of angle 1 is (20-10)/2= 10/2= 5 degrees
