Math  /  Algebra

Questionve the following equation for dd. Be sure to take into account whether a letter QR=8d\frac{Q}{R}=\frac{8}{d}

Studdy Solution

STEP 1

What is this asking? We're asked to rearrange a simple equation to solve for the variable dd, essentially flipping it around! Watch out! Don't forget that when manipulating equations, whatever you do to one side, you *must* do to the other to keep things balanced.

STEP 2

1. Isolate dd
2. Calculate dd

STEP 3

We want to get dd out of the denominator.
To do that, let's **multiply both sides** of the equation by dd.
Remember, what we do to one side, we *must* do to the other! QRd=8dd \frac{Q}{R} \cdot d = \frac{8}{d} \cdot d On the right side, the dd in the numerator and the dd in the denominator divide to one, leaving us with: QRd=8 \frac{Q}{R} \cdot d = 8

STEP 4

Now, we want to get RR out of the denominator on the left side.
We can do this by **multiplying both sides** by RR: QRdR=8R \frac{Q}{R} \cdot d \cdot R = 8 \cdot R On the left side, the RR in the numerator and the RR in the denominator divide to one, giving us: Qd=8R Q \cdot d = 8 \cdot R

STEP 5

Finally, to isolate dd, we need to **divide both sides** by QQ: QdQ=8RQ \frac{Q \cdot d}{Q} = \frac{8 \cdot R}{Q} On the left side, the QQ in the numerator and the QQ in the denominator divide to one, so we get: d=8RQ d = \frac{8 \cdot R}{Q} Now, dd is completely isolated, and we have a formula for it!

STEP 6

Since the problem didn't give us specific values for QQ and RR, we can't calculate a numerical value for dd.
Our **final answer** is the formula we derived: d=8RQ d = \frac{8 \cdot R}{Q}

STEP 7

Our solution for dd is: d=8RQ d = \frac{8 \cdot R}{Q}

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