Tuesday

September 30, 2014

September 30, 2014

Posted by **Bella bell** on Monday, January 9, 2012 at 12:58am.

Which five consecutive numbers equals 175?

Farmer has ducks and cows in his farm. If all together t animals have 60 heads and 70 feet how many ducks and how many cows does farmer has?

- Math -
**drwls**, Monday, January 9, 2012 at 2:33am<<Which five consecutive numbers equals 175?>>

The average is 175/5 = 35, and that must be the "middle" number.

Since they are consecutive integers, they are 33, 34, 35, 36 and 37

You must have copied the last question incorrectly, unless there are a lot on one-legged cows and ducks

- Math -
**Steve**, Monday, January 9, 2012 at 10:45amConsider one of the points. If there are n points, you can draw n-1 lines from that point to the others.

By the time you have drawn all lines from n points, you have drawn n(n-1) lines. But each line is drawn twice. The line from point 6 to point 3 is the same line as was already drawn from point 3 to point 6.

There are thus n(n-1)/2 lines.

For this problem, n=15.

**Answer this Question**

**Related Questions**

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

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

math - you can draw one segment to connect two points and three distinct ...

math - you can draw one segment to connect two points and three distinct ...

geometry - Trisha drew a pair of line segments starting from a vertex. Which of ...

math - Five points lie in the same plane with no three points on the same line. ...

Geometry - Eight points A, B, C, D, E, F, G, and H are distributed in a plane. ...

algebra - Find the slope of each of the three line segments. Between which two ...

algebra - the circle to the right has 21 points. All possible line segments have...

Grade 9 Math - There is one large rectangle ABCD, top line is AD and bottom is ...