Which of the following represent the distance formula? Select all that apply.
1 answer:
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d(-3 + x) = kx + 9
- Distribute d inside the parentheses.
-3d + dx = kx + 9
- Subtract kx from both sides.
-3d + dx - kx = 9
- Add 3d to both sides.
dx - kx = 9 + 3d
- Factor x out of dx - kx.
x(d - k) = 9 + 3d
- Divide both sides by d - k.
x =
- If you want to simplify this even more, factor 3 out of the numerator.