kak tolong bantu kak​

It means that her height in this year is 106% x in regards to the last year, where x is her height in last year, so:
159 = 106% x
159 = 100 106 ​ x
159 = 50 53 ​ x
159 ∗ 50 = 53 x
159 ∗ 50 = 53 x
7950 = 53 x
150 = x

Answered by Scryt | 2024-06-24

Your sister's height last year was approximately 150 cm, as this height reflects a 6% increase leading to her current height of 159 cm. This is derived by calculating her last year's height as 159/1.06 .
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Answered by Scryt | 2024-10-01

Jawaban:soal:Selesaikan perhitungan berikut:1. 32 1/5 + 64 2/3 - 125 1/3 x 36 1/2 : 8 2/32. (61 5/3 + 81 1/2) / (125 2/3 - 32 2/5)3. Rasionalkan penyebut dari:- a) 2 / (√6 + √2)- b) (3 + √2) / (√5 + √3)- c) √8 / 6- d) (√8 + √6) / √6 caranya:1. 32 1/5 + 64 2/3 - 125 1/3 x 36 1/2 : 8 2/3- 32 1/5 = 161/5- 64 2/3 = 194/3- 125 1/3 = 376/3- 36 1/2 = 73/2- 8 2/3 = 26/3- 161/5 + 194/3 - (376/3 x 73/2) : 26/3 = 161/5 + 194/3 - (13748/6) x (3/26) = 161/5 + 194/3 - 41244/156 = 161/5 + 194/3 - 10311/39- (161 x 39 + 194 x 65 - 10311 x 5) / 195 = (6279 + 12610 - 51555) / 195 = -32666/195 ≈ -167.522. (61 5/3 + 81 1/2) / (125 2/3 - 32 2/5)- Sepertinya ada kesalahan penulisan. Anggap 61 5/3 sebagai 61 2/3 = 185/3 dan 81 1/2 = 163/2- Anggap 125 2/3 = 377/3 dan 32 2/5 = 162/5- (185/3 + 163/2) / (377/3 - 162/5) = ((185x2 + 163x3)/6) / ((377x5 - 162x3)/15) = ((370 + 489)/6) / ((1885 - 486)/15) = (859/6) / (1399/15) = (859/6) x (15/1399) = 12885 / 8394 ≈ 1.533. Rasionalkan penyebut:- a) 2 / (√6 + √2) = 2(√6 - √2) / (6 - 2) = 2(√6 - √2) / 4 = (√6 - √2) / 2- b) (3 + √2) / (√5 + √3) = (3 + √2)(√5 - √3) / (5 - 3) = (3√5 - 3√3 + √10 - √6) / 2- c) √8 / 6 = 2√2 / 6 = √2 / 3- d) (√8 + √6) / √6 = (√8 / √6) + (√6 / √6) = √(8/6) + 1 = √(4/3) + 1 = 2/√3 + 1 = (2√3)/3 + 1 = (2√3 + 3) / 3maka:1. -167.522. 1.533. a) (√6 - √2) / 2b) (3√5 - 3√3 + √10 - √6) / 2c) √2 / 3d) (2√3 + 3) / 3

Answered by ara1412 | 2025-08-24