Question

Given the equation d = (r1 + r2) t, solve for r1.

A) r1 = d * t * r2
B) r1 = d - t * r2
C) r1 = d / t - r2
D) r1 = d - r2t

Answer 1

To solve for r1 in the equation d = (r1 + r2) t, subtract r2t from both sides and then divide by t to isolate r1, leading to the solution r1 = d / t - r2.

Step-by-step explanation:

The equation given is d = (r1 + r2) t and we need to solve for r1. We can do this by isolating r1 on one side of the equation:

First, we'll distribute the time t across the sum: dt = r1t + r2t.

To isolate r1, we then subtract r2t from both sides of the equation: d - r2t = r1t.

Finally, to solve for r1, we must divide both sides by t: r1 = (d - r2t) / t.

So the solution for r1 is C) r1 = d / t - r2.