Off on a Tangent 
A Fortnightly Electronic
Newsletter from the Hope College Department of Mathematics 
April 13, 2018  Vol. 16, No. 13

http://www.math.hope.edu/newsletter.html 
Colloquium: Predicting farm incomes in Uganda 
Title: Predicting farm incomes in UgandaLinear, Logistic, LASSO, and beyond  
Speaker: Dr. Yew Ming Koh, Hope College 

Time: Tuesday, April 17 at
4:00 pm 

Place: VanderWerf 102 
Colloquium: Analyzing ranking data 
Title: Analyzing ranking data  
Speaker: Dr. Martha Precup,
Northwestern University 

Time: Thursday, April 26 at
4:00 pm 

Place: VanderWerf 102 
Students participate in the Lower Michigan Mathematics Competition 

Seven
students (Front row: Jarrod Devette, Emily Marino, Kimberly
Breyfogle. Back row: Calvin Gentry, Leah Krudy, Richie
Frost, Dane Linsky) traveled to Hillsdale College on Saturday, April 7
to compete in the Lower Michigan Mathematics Competition along with
many other teams from a number of other Michigan colleges and
universities. They reportedly had a good time and the trip
involved donuts, ice cream, show tunes, as well as a little mathematics. The results should be announced later this month. To view the problems the students worked on click here. 
Problem
Solvers of the Fortnight 
To decorate my scrapbook, I cut a 4inch wide parallelogram out of a square piece of paper as shown in the diagram on the left. Surprisingly enough, the parallelogram and each of the two leftover pieces of paper all had exactly the same area! What are the exact dimensions of the original square? Congratulations to the following who correctly determined the correct dimensions: Samuel Allbritten, Anna Carlson, Carolyn Cooper, Jordan Corstange, Adair Cutler, Christian Forester, Brandon Fuller, Ce Gao, Calvin Gentry, Hunter Giewswin, Mason Humphrey, Elizabeth Inthisane, Philip LaPorte, Kachikwu Nwike, Zheng Qu, Madeline Stanton, Caleb Stuckey, Fangtao Wang, and Yizhe Zhang 
Problem
of the Fortnight 
Off
on a Tangent 