How do I find the third side of a triangle when given the length of the other two sides

A school has 70 sixth graders, 65 seventh graders, and 75 eighth graders. In each grade, 20% of the students live within 1 mile of school. What is the total number of students that live more than 1 mile from school? A. 42 B. 168 C. 190 D. 210

Does (-8,-8) make the equation y = x true

Marti rolls two dice what is the probability that the sum of the dice is 7 given that the first die is 2

Yummy Donuts gave three dozen chocolate donuts and five dozen jelly donuts to the school. How many donuts did they give?

Polygon DEFG has coordinates D (2, 5), E (3, 1), F (4, 6), and G (6, 6). If the polygon is translated 4 units down, what are the coordinates of E'?

To decrease an amount by 19% multiply by

Rewrite the fraction in simplest form. 40/56

What is 6x+11 = - (6x+5)

What is 255 written as a percent

What is 1/2*1/2-3 equal