Answer:

Step-by-step explanation:
we know that
The recipe calls for 1 2/3 of sugar
To make 2 1/2 times the recipe
Multiply 2 1/2 by 1 2/3
Convert mixed numbers to an improper fraction


so

Convert to mixed number

The answer is 3 cm. You just have to add the sides you know (6 and 8) and subtract that from the perimeter (18)
Answer:
3/8 (Decimal: 0.375)
Step-by-step explanation:
The surface area is 72 ft.^2.
I don't really know if the question is complete but...
y = x -10 can be a solution
so y would be -7 when x is 3