Find three different ratios that are equivalent to the ratio 3:11​

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.

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.