Bab 1 Fungsi, Persamaan, dan Pertidaksamaan Eksponensial
Tupok 1 Tugas Kelompok 1
Soal dan Jawaban Matematika Kelas X Sukino
TUPOK 1
8. Given that 53x / 25y = 3125 and 2x . 4y-1 = 32 , find the value of x and of y
Jawaban :
53x
----- = 3125
25y
53x
----- = 55
52y
53x-2y = 55
3x - 2y = 5
2x . 4y-1 = 32
2x . 22y-2 = 25
x + 2y - 2 = 5
x + 2y = 7
menggunakan eliminasi
3x - 2y = 5
x + 2y = 7
--------------- +
4x = 12
x = 3
x + 2y = 7
3 + 2y = 7
2y = 4
y = 2
>> Tupok 1 no 9 Matematika Sukino Kelas X