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OpenStudy (anonymous):
Suppose p varies directly with d, and p = 7 when d = 3. What is the value of d when p = 28? A. 4/3 B. 16 C. 140/3 D. 12
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OpenStudy (psymon):
Didnt you do a problem like this before? Thought you understood how to do it?
OpenStudy (anonymous):
this is a different one
OpenStudy (anonymous):
I never did this. @Psymon
OpenStudy (psymon):
its the same idea, though, just different numbers. directly means y = kx, solve for k first. Its just this time they usethe letters p = dk
OpenStudy (anonymous):
???No clue, sorry
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OpenStudy (anonymous):
ok
OpenStudy (anonymous):
hey @Psymon thanks I kinda get your formula!
OpenStudy (anonymous):
7=3 then 28=?
OpenStudy (anonymous):
understood
OpenStudy (anonymous):
yea ik already it 12
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OpenStudy (anonymous):
thanks for trying to explain
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