Dibantu pakai cara Besok dikumpulkan makasih
25. C. 82
Rata rata
= jumlah data / banyak data
= (70×8) + (80×4) + (85×10) +(90×6) + (95×2) /30
= 560 + 320 + 850 + 540 + 190/30
= 2460 / 30
= 82
26. D. 71
6² + ²√1225
= ( 6 × 6) + 35
= 36 + 35
= 71
27. C. 360 km
JS = jp : s
= 24 cm : 1/1.500.000
= 24 × 1.500.000
= 36.000.000 cm
= 36.000.000 : 100.000
= 360 km