Solve for a

Given R = 1/[(1/a) + (1/b)].

Let me see.


LCD for [(1/a) + (1/b)] is ab.


I get (b + a)/(ab).


R = (b + a)/(ab)

(ab)R = b + a

abR - a = b

a(bR - 1) = b

a = b/(bR - 1)

You say?

 

A grade calculator efficiently tracks and predicts academic performance by calculating weighted averages from various assessments. It aids students in setting goals and understanding how future grades will impact their overall score, promoting better study planning and time management.

 

A grade calculator efficiently tracks and predicts academic performance by calculating weighted averages from various assessments. It aids students in setting goals and understanding how future grades will impact their overall score, promoting better study planning and time management.