39 dibulatkan ke puluhan terdekat menjadi tolong dijawab soalnya lagi buru buru

18 * 0.1 = 1.8 ml
0.09(x + 18) = 1.8 18 + x = 20 x = 20 - 18 x = 2 **** 2 ml.

Answered by Anonymous | 2024-06-10

10% = 100 10 ​ = 0.1 0.1 ⋅ 18 m l = 1.8 m l − c l e a r a l co h o l 9% = 100 9 ​ = 0.09 w − a dd e d w a t er ( m l ) 18 m l + w − 9% a l co h o l so l u t i o n 0.09 ( 18 + w ) = 1.8 / : 0.09 18 + w = 20 / − 18 w = 2 A n s w er : 2 m l .

Answered by Anonymous | 2024-06-24

To reduce the concentration of an 18 mL 10% alcohol solution to 9%, you need to add 2 mL of water. This is calculated by setting up a dilution equation based on the desired concentration and solving for the volume of water needed. Therefore, adding 2 mL of water achieves the desired concentration adjustment.
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Answered by Anonymous | 2024-09-03

Jawab:40Penjelasan dengan langkah-langkah:Karena kalau angka satuan 5,6,7,8,9 maka angka puluhan akan dibulatkan ke atas (+1). Jadi, 39 dibulatkan akan menjadi 40

Answered by Anonymous | 2025-07-05