jika x : y=2:5.jika x+y =28 .maka x.... A.2 C.10 B.5 D.4 Tolong jawab ,dikasih poin tinggi
Matematika
kifizi
Pertanyaan
jika x : y=2:5.jika x+y =28 .maka x....
A.2 C.10
B.5 D.4
Tolong jawab ,dikasih poin tinggi
A.2 C.10
B.5 D.4
Tolong jawab ,dikasih poin tinggi
1 Jawaban
-
1. Jawaban newwiguna
x : y = 2 : 5
x/y = 2/5
y = 5/2 x
x + y = 28
Substitusikan
x + y = 28
x + 5/2x = 28
7/2 x = 28
x = 28 : 7/2
x = 28 x 2/7
x = 4 x 2
x = 8