90 = 9 ∗ 10 = 9 ∗ 10 = 3 10 = 3 ∗ 3.16227766 = 9.486832981
Exact element never pull out of an irrational number. They are like mathematical proofs. However, what I wrote is very for a precise approximation.
The exact square root is **9.48683298051 **Rounded square root is 9 ****Hoped I helped:D
The exact square root of 90 is 3 10 . To find this, we factor 90 into 9 and 10 , and then simplify the square root. The approximate decimal value is 9.48683298 , but the exact answer is more preferred in mathematics.
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Jawaban:Soal:Diketahui matriks A = ((x+y, x), (y, x-y)) dan B = ((1, -1/2 x), (-2y, 3)). Jika A' = B, nilai x adalah .... Penyelesaian: 1. Transpos Matriks A:- A' = ((x+y, y), (x, x-y))2. Samakan dengan Matriks B:- Karena A' = B, maka:- ((x+y, y), (x, x-y)) = ((1, -1/2 x), (-2y, 3))3. Buat Persamaan:- Dari persamaan matriks di atas, kita dapatkan:- x + y = 1 ...(1)- y = -1/2 x ...(2)- x = -2y ...(3)- x - y = 3 ...(4)4. Selesaikan Persamaan:- Substitusi persamaan (2) ke persamaan (1):- x + (-1/2 x) = 1- 1/2 x = 1- x = 25. Cek dengan Persamaan Lain:- Substitusi x = 2 ke persamaan (3):- 2 = -2y- y = -1- Substitusi x = 2 dan y = -1 ke persamaan (4):- 2 - (-1) = 3- 3 = 3 (Memenuhi) Kesimpulan:Nilai x adalah 2. Jadi, jawaban yang benar adalah b. 2.