Select the fraction equivalent to 0.1¯ its not 1/10

1/1
B 1/9
C 1/11

please explain why

The sum of two numbers is 86, and their difference is 20. find the two numbers

What other information do you need to prove triangle dac=bca by asa

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10