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mathstahpBest ResponseYou've already chosen the best response.0
Suppose you have four numbers (call them a,b,c,d). They have the following characteristics: a is a perfect cube b is a perfect square c is divisible by 10 d is ONLY divisible by 5 They are also related in the following ways: \[ca=4+b\] \[d/c = (a(d51)/a(c69))\] \[bcad = 2165\] \[5(d3a) = 80\] What is a, b, c, and d?
 one year ago

mathstahpBest ResponseYou've already chosen the best response.0
Oh, and just so it doesn't cause any confusion, the second equation can also be written as: \[d/c = (a(d51)\div(a(c69))\]
 one year ago

joshiBest ResponseYou've already chosen the best response.1
well i'm doing some calculations...but i think one thing i know is that d is 5?
 one year ago

mathstahpBest ResponseYou've already chosen the best response.0
how did you get d=5, joshi? I would just like to know how to start dealing with all of these.
 one year ago

joshiBest ResponseYou've already chosen the best response.1
oh wait never mind what i said about d. from ca=4+b, i got c=4+b+a and i cross multiplied the second equation. and substituted c for 4+b+a that's what i have until now
 one year ago

mathstahpBest ResponseYou've already chosen the best response.0
Bahh...I'm just gonna give up on this stupid problem. Thanks for your help, though.
 one year ago

joshiBest ResponseYou've already chosen the best response.1
aw nooo well do you know the actual answer though? i'm going to finish this anyway, you're welcome
 one year ago
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