MONDAY MATH MADNESS; 3/25/19

Published Monday, March 25, 2019 by Tifinie

 

Regular practice will keep your math skills always at their best.  Continue to keep your math skills strong by practicing this week’s Math Madness Brain Buster.

 


MATH MADNESS QUIZ QUESTION


In the equation t = x-a, if x has the value of 4, which of the following can be considered as possibly true?

 

A) t = 1/16

B) t = 4a

C) t = √4a

D) t-a = 12

E) None of the above

 

Stay tuned for the solution!

 

 

 


PREVIOUS MATH MADNESS SOLUTION(S)


 

Solution for last week’s Math Madness question from 3/18/19:  Part I is   D)  9π ;        Part II is   A)  36π

 

 

Part I

The formula to find fractional circumferences (FC) is:     FC = (xo / 360o)2πr

 

Substitute:                                                                      FC = (90o / 360o)2π(18)

 

Simplify and Solve:                                                             FC = (1/4)(36π)

>                                                                                               FC = 9π

 

 

Part II

If ¼ (or 90o/360o) of the circumference of the circle is 9π, then you just need to multiply the fraction of the circumference by 4 to get the whole circumference again (or you can just identify the circumference of the whole circle that you found already in part 1 of the problem.  Originally, the formula gives you the total circumference and you solve for a fraction of it, but if you take the fraction away it is the total of the circumference!  See the part of the equation that is in orange)

>                     (1/4)C = 9π

>          (4)   •  (1/4)C = 9π  •  (4)                             Multiply both sides by 4 to get rid of fraction

>                        C = 9π • 4

>                         C = 36π


comments powered by Disqus