P=58.4+2.6=58+0.40+0.60+2=60+1=61
P=61 seconds.
Practice time P seconds Timing in the Race : R = 58.4 seconds Improvement Record I = 2.6 seconds Race timing = Practice timing - Improvement record R = P - I 58.4 seconds = P - 2.6 seconds
Take 2.6 seconds to the left hand side, 58.4 sec + 2.6 sec = P P = 61.0 seconds
Now, subtract improvement record time from Practice time, you get the race time.
Heather's practice time was 61.0 seconds, which is reasonable because when subtracting 2.6 seconds from this time, we get her race time of 58.4 seconds. This confirms the calculation is correct. Therefore, the equation is valid and the solution aligns perfectly with the information given.
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Penjelasan:Ini Muhammad Amar, dia adalah siswa kelas sepuluh dari Madrasah Aliyah Negeri 2 Semarang. Alamat sekolahnya di Jalan Miryati nomor 49, Semarang, Jawa Tengah.