I need help with the problem below Pls dont spam random letters :)

2 1/7 :(1.5a)= 5/14 :0.8

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?