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Advanced Math/Arranging an Equation


QUESTION: Thanks for helping,

At the bottom of this page;

A x Z =  30,689.180237576

But we only know the "approximate" values for A and Z.

How can we arrange the equations in order to find the "exact" values for A and Z ?

ANSWER: If AZ=30,689.180237576 then divide both sides by Z and you will have an exact value for A and vice versa for Z

---------- FOLLOW-UP ----------

QUESTION: Am I missing something because;

Dividing  30,689.180237576  by an approximate Z  just gives an approximate  A

We need the  "exact"  values for  A  and  Z


Hi, yes you are missing something here.
The number pi which is equal to the circumference of a circle divided by the diameter of a circle is represented by the pi symbol and as such is exact. When you say it is approximately 3.14 it is not exact. The same with the square root of 2. It is exact written with the square root symbol but when put into the calculator it's approximate value is 1.414 but it's exact value is the square root of 2.

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Sombra Shadow


I can answer most questions up through Calculus and some in Number Theory and Abstract Algebra.


I have had my Bachelor's Degree since 1987 and have been a teacher since 1988. I earned my Masters Degree in Mathematics May 2010. I have been teaching at the same community college since 2002.

I have taught 12 years at the community college level, medical college, and technical college as well as a high school instructor and alternative education instructor and charter school instructor.

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