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.

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

first one because it can't have a fraction in it

step-by-step explanation: