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1. Solve for x: 4x-13=35
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To isolate 4x add 13 to both sides, so that you have 4x=48. Then divide both sides of the = sign by 4, so that x=12. |
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2. Solve for R: pV=nRT
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Divide the literal equation by n first. By doing this you will remove the n from the right side of the problem so that you will begin to isolate the R. This will give you pV/n=RT. Then divide both sides of the equation by T. Combine the variables n and T at this point, so that your answer is pV/nT=R. |
| 3. Give the equation for the line with slope three through (2,9)
in point-slope form:
point slope form: y-y1= m(x-x1) y-9= 3(x-2)
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In this equation m is the slope and the x and y values are two and nine, respectively. (The first number in the ordered pair is the x value, while the second is the y value.) The y value is placed in the y1 position and the x value is placed in the location of the variable, x1. (The y and x variables should remain in their original location untouched.) The slope is already known, so the finished equation is y-9=3(x-2). |