There are 15 students And a social studies class. Two students will be selected to present their term projects today. And how many different orders given to students to be selected?

A. 849

B. 105

C. 420

D. 210

The angle measures of a triangle are 85°, 38°, 57°. What kind of triangle is it

How do you find the perpendicular bisector of a triangle? How do you find an equation of that segment?

A shed with a pent roof need to have some new roof beams fitted

Jones Co. pays its employees on a graduated commission scale: 2% on first $30,000; 3% on sales from $30,000 to $60,000; and 5% on sales greater than $60,000. If Rick Wise, an employee of Jones, had sales of $92,000, what commission did he earn?

The world population in 2013 was about 7.125 billion. In 2003, it was about 6.357 billion. Which number represents the increase in the world population between 2003 and 2013?

Solve the equation. 5y - 1 + y = 34 + 4y - 5y

Draw an angle BAC. Extend the sides AB and AC of the angle. Does this change the size of the angle?

Robyn ran 5 3/4 miles last week. She ran 4 1/10 this week. How many more miles did she run last week?

What are all the factors of 360?

Which number in the set {-486, 0, 259} is a natural number?