Answer: 
Step-by-step explanation:
It is important to remember that, by definition, proportional relationships have the following form:
Where "k" is the constant of proportionality.
We know that Maddy assume that the relation between the volume and the weight is proportional.
Then, let be "V" the volume in liters and "w" the weight in kilograms.
We can write the following equation:
So, if the boat of 555 liters weights 7.5 kilograms, we can find "k":
In order to solve the exercise, substitute the value of "k" and 
into the equation and solve for "w". Then:
Its
0.001 m / 1 mm and 60 mins / 1 hour
I just took the test.
k12 right?
Answer:
9/4 OR 2 1/4
Step-by-step explanation:
-3/2 to the second power is -3/2 * -3/2 so you multiply the numerators together and you multiply the denominators together then put it back as a fraction
-3 *-3 = 9
2 *2 =4
9/4 or in mixed form 2 1/4
-4m +18-6=0
-4m+12=0
-4m=-12
m=3
4x+15y=13 (1)
3x+5y=16 (2)
(2) * 3 --> 9x+15y=48 becomes (3)
(3) - (1)
5x=35
x=7
sub x =7 into (1)
4(7)+15y=13
28+15y=13
-28 -28
15y= -15
y= -15/15
y= -1
therefore x=7 and y= -1
