Answer:
1 times 42 and 6 times 7 for 42
1 times 0 and 5 times 6
(I did this question in school once)
46. 6*3=18 hence x=9*3=27 (ratio is 3:1)
47. x=8 clearly 2:1 ratio.
48.ratio is 1/3 hence, x=9/3=3
49.7:1 ratio. so, x=70
I hope you got the hang of it. so do the last two yourself.
B. polygons are figures with 3 sides or more
10x-4(x-5)= 6x+4
10x-4x+20=6x+4
6×+20=6x+4
÷6x ÷6x
___________
20= 4
Since there is no variable you will have no solution.