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Spare parts has comics and random math topics for discussion. Includes questions (and answers), puzzles, and links to other sources.
9/25/16
Quick Exponents Question
8/31/16
"Spinning Wheels"
If wheel A makes 10 revolutions, then how many revolutions will wheel C make?
Find more circles questions and arc length problems in the mathplane site.
8/17/16
Hexagon Area Problem
The figure is a regular hexagon with side length 8.
Find the shaded area.
8/3/16
Work - Rate Question
A girl can wash 10 windows in 45 minutes. Working with her brother, together, they can wash 5 windows in 10 minutes.
Working by himself, how fast can the brother wash 15 windows?
7/18/16
Trapezoid and Coordinate Geometry
If the area of the trapezoid is 53 square units, what is the coordinate (a, b)?
(***Topic for discussion: is there more than one solution?!??!)
6/28/16
A Simple Progression
Given these 3 consecutive terms from an arithmetic sequence, what is x ? What are the 3 terms?
3x + 4, 4x + 3, 6x - 2
5/16/16
"Climbing a Wall"
This (book) worm climbs up a wall at a rate of 5 feet per day. But, at night--while it rests-- it slips back down 3 feet.
How many days will it take the worm to reach the top of a 30-foot wall?