Answer:
I would say 36
Step-by-step explanation:
because 4 ×5 is equals the 20
then 4×7 equals the 28
so 4×9 equals 36
Answer:
3
Step-by-step explanation:
Answer:
Step-by-step explanation:
55.
Answer:
636/928 = 137/200
0.685
68.5%
Step-by-step explanation:
Step-by-step explanation:
elimination of x:
-6x +5y = 1
6x + 4y = -10
___________+
9y = -9
y = -9/9 = -1
elimination of y:
-24x +20y = 4
30x + 20y = -50
_____________-
-54x = 54
x = 54/-54 = -1
{ -1, -1}