- #1
albinoboy
- 13
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Simple Algebra problem that is killing me!
From the set of equations below, involving the unknowns p, q, r, and t, find the values of t / r. (Use the correct number of significant figures.)
p = 7q
pr = qs
0.5pr^2 + 0.5qs^2 = 0.5qt^2
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I have been working on this problem for some time now. I have tried dividing all the terms by r^2 and seting (t/r)=x just to simplify the answer. I have come up with 7.5 and -7.5 but it says these answers are incorrect.
Homework Statement
From the set of equations below, involving the unknowns p, q, r, and t, find the values of t / r. (Use the correct number of significant figures.)
p = 7q
pr = qs
0.5pr^2 + 0.5qs^2 = 0.5qt^2
Homework Equations
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The Attempt at a Solution
I have been working on this problem for some time now. I have tried dividing all the terms by r^2 and seting (t/r)=x just to simplify the answer. I have come up with 7.5 and -7.5 but it says these answers are incorrect.