Answer:
perimeter =52cm
hope it helps.
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2y - 3x = 4
2y = 3x + 4
y = 3/2*x + 2
y = kx + b ==>
k = 3/2 = 1,5
Answer:
The ratio of boys to girls is 4:5. So let 4x be the number of boys and 5x be the number of girls. Then 4x+5x = 9x is the total number of students. Then the fraction of boys in the class is 4x/9x = 4/9.
They are opposites of each other.
-13.2 + 8.1 = -5.1
13.2 - 8.1 = 5.1
