Answer:
60 degrees
Step-by-step explanation:
Let a/b and c/d represent two rational numbers. This means a, b, c,and d are INTEGERS , and b and d are not 0. The product of the numbers is ac/bd , where bd is not 0. Both ac and bd are INTEGERS , and bd is not 0. Because ac/bd is the ratio of two INTEGERS, the product is a rational number.

Answer:
a convenience sample is always valid and reliable is true not false
Step-by-step explanation: