Answer:
(1 + \sqrt{3} ) : 3
Step-by-step explanation:
AB = x
BC = x cm
Area = l * b = x
* x
= x^2
EFG is equilateral triangle
EF = y cm
Area of triangle = 
A = (\sqrt{3} / 4) * y^{2}
As both areas are equal
2x = y
perimeter of ABCD = 2 (l + b)
perimeter of EFG = 3y
so ratio is 
substitute y = 2x
D) Every square is a rectangle.
C. 10r-3
Because 2r+5=7, the minus 6 and 7 which gives you 1 then minus 4 and 1 witch is 3 then you do 10r-3 and it will get you to 2r+5=7 again. I hope this helped!
Answer:
So the answer is -7
Step-by-step explanation:
2z + 8 = −6
2z + 8 -8 = -6 -8 ( add - 8 for both sides)
2z = -14
2z/2 = -14/2 (divide both sides by 2)
z = - 7
So the answer is -7
