Friday

January 30, 2015

January 30, 2015

Posted by **Jesse** on Wednesday, March 4, 2009 at 4:09pm.

- Math: Combinations -
**Reiny**, Wednesday, March 4, 2009 at 5:15pmI can form a triangle by choosing any two points on the one line, then one of the points from the other line.

so the number of ways

= C(20,2)x15 + C(15,2)x20

= 2850 + 2100

= 4950

**Answer this Question**

**Related Questions**

math CA - 1. What are the next two terms in each sequence? 2, 4, 8, 14, 22, … (2...

Math - We are learning about proofs. We drew lines between noncollinear points. ...

math,correction - The question asks: Find the slope of any ilne parallel to the ...

math - L is a straight line in x-y plane. its equation is in the form y-8=m(x-1...

geometry - We are learning about proofs. We drew lines between noncollinear ...

Geometry - Kelly drew four points A, B, C, and D in her notebook. A straight ...

geometry - distint points a, b, c, d, e, and f are marked on a circle. How many ...

math - There are nine points on a piece of paper. No three of the points are ...

Geometry - Describe the locus of all points, in space, that are 5 cm from line ...

Math 116 - 1.Write an equation of the line containing the given points and ...