24 times piano is practiced in 4 weeks .his brother practiced 12 times 14 days are theses two equivalent

Not equivalent.

Step-by-step explanation:

First bro:  24 piano sessions

                = 6 sessions/wk

                            4 wks

Second bro:  12 sessions

                      = 6/7 session/ day or 6 sessions / 2 weeks, or

                         14 days          3 sessions per week

Not equivalent.  The first bro practices twice as many times as does the second.

me

step-by-step explanation:

6^2 or 36

step-by-step explanation:

6000n

6×1000n

6×10^3 n

so we need 6n need to be a perfect cube

so n has to be 6^2 so that 6n is 6^3

what i'm saying is if you let n be 6^2 you have 6^3×10^3 or 60^3 which is a perfect cube