selesaikan persamaan berikut x+y=1...(1) 2x-y=5...(2) dengan metode substitusi, eliminasi, dan grafiktolong kak!! d kumpulkan sekarang!!!​

If you mean that the total number of questions is 70, then:

You need to figure out what 90% is of the total, 70.
Do this by multiplying 70 by 90% --> 70*(.9)
90% of 70 is 63. The total number correct is 63.

You can check your work by figuring out what percentage 63 is of 70. 63 divided by 70 (63/70) is .9, or 90%.

Answered by Laurae | 2024-06-10

The number of correct answers is 63, which is 90% of a total of 70 questions. This was calculated by multiplying 70 by 0.9. Verification of the result shows that 63 divided by 70 equals 90%.
;

Answered by Laurae | 2024-12-23

Penyelesaian1. substitusi[tex]y=1 - x[/tex][tex]2x - (1 - x) = 5[/tex][tex]2x - 1 + x = 5[/tex][tex]3x - 1 = 5[/tex][tex]3x = 6[/tex][tex]x = 2[/tex][tex]y = 1 - 2[/tex][tex]= -1[/tex][tex](x, y) = (2, -1)[/tex]2. eliminasi[tex]x + y = 1 \quad (1)[/tex][tex]2x - y = 5 \quad (2)[/tex][tex](x + y) + (2x - y) = 1 + 5[/tex][tex]3x = 6[/tex][tex]x = 2[/tex][tex]2 + y = 1[/tex][tex]y = -1[/tex][tex](x, y) = (2, -1)[/tex]3. grafik[tex]y = 1 - x[/tex][tex]2x - y = 5[/tex][tex]y = 2x - 5[/tex]

Answered by vinganzbeut | 2025-08-25