Question

Mohon dibantu 17-20!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
pakai cara

Answer 1

17.

((3)(4) + (4)(5) + (7)(6) + (5)(7)) / (3 + 4 + 7 + 5)
= (12 + 20 + 42 + 35) / 19
= 109 / 19
= 5,75

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18.

P + W = 40
W = 40 - P

(P)(69) + (W)(74) / 40 = 72
69P + (40 - P)(74) = 2.880
69P + 2.960 - 74P = 2.880
-5P = 2.880 - 2.960
-5P = -80
5P = 80
P = 80 / 5
P = 16

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19.

(10)(172) - (1)(x) / 9 = 173
1720 - x = 1557
x = 1720 - 1557
x = 163

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20.

jumlah data : 4 + 6 + 10 + 15 + 5
= 40

median = 40 + 1 / 2
= 41 / 2
= 20,5

median ada di data antara 20 dan 21

= 7,5