Answer:
<em>r=6</em>
Step-by-step explanation:
<u>Proportions
</u>
We know M is directly proportional to 
This can be written as
Where k is the constant of proportionality which will be determined knowing that when r = 4, M= 160. Substituting in the equation above:
Solving for k:
The equation is:
Now find r when M=540:
Dividing by 2.5:
Taking cube roots:
![r=\sqrt[3]{216}](https://tex.z-dn.net/?f=r%3D%5Csqrt%5B3%5D%7B216%7D)
r=6
The answer is 35 because u need to multiply 7 by 5 because they multiply 9 by 5.
Answer:
1. C
2.A
3.A
4.B
Step-by-step explanation:
First, lets start by getting all of the perimeters and volumes of the pools. For pool A, it has a volume of 18*9.75*4.5=789.75 cubic feet, and a perimeter of 18*2+9.75*2=55.5 feet. For pool B, it has a volume of 16*10*5=800 cubic feet, and a perimeter of 16*2+10*2=52 feet. For pool C, it has a volume of 15*12*4.5=810 cubic feet, and a perimeter of 15*2+12*2=54 feet. Therefore, for problems 1 and 2, Model C needs the largest amount of water to be filled, while model A needs the least. For problems 3 and 4, Model A uses the largest liner, while Model B uses the smallest one. Hope this helps!
Multiply the coefficients
i think the next one might be exponents??
I'm not 100% sure on this but im trying to helppp
