A teacher divided the class into two groups of equal size. of the first group are right-handed.
80% of the second group are right-handed.
What fraction of the class is right-handed?
A
8/9
B4/5
C7/19
D5/7

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?

1. are the triangles similar and if so why? what is the value of x? show your work.

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.