The equation represents the total resistance, r, when two resistors whose resistances are r1 and r2 are connected in parallel. Find the total
resistance when r1 is x and r2 is x + 1.

--- total resistance

Step-by-step explanation:

Given

Required

Find R when

So, we have:

Substitute values for both R's

Take LCM

Collect like terms

Inverse both sides

stop using this to cheat on home work

step-by-step explanation:

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x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)