Diketahui data tunggal 36,39,40,31,28,42,37,31,a,25,29,36,40,28,39,37,35,25,36,27.dengan rta-rta 33,9. hitunglah nilai a!
Matematika
veronicamaria17
Pertanyaan
Diketahui data tunggal 36,39,40,31,28,42,37,31,a,25,29,36,40,28,39,37,35,25,36,27.dengan rta-rta 33,9. hitunglah nilai a!
1 Jawaban
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1. Jawaban rezamahesaa
33,9 = (36+39+40+31+28+42+37+31+a+25+29+36+40+28+39+37+35+26+36+27) / 20
33,9 = (642 + a) / 20
642 + a = 678
a = 678 - 642
a = 36