Answer:
r = 8
Step-by-step explanation:
Given that M is directly proportional to r² then the equation relating them is
M = kr² ← k is the constant of proportionality
To find k use the condition when r = 2 , M = 14
k =
=
= ![\frac{7}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B2%7D)
M = r² ← equation of proportion
When M = 224, then
224 =
r² ← multiply both sides by 2
7r² = 448 ( divide both sides by 7 )
r² = 64 ( take the square root of both sides )
r =
= 8
have wonderful day
You would need 3 liters of lemon-lime soda, 1.5 pints of sherbert, and 4.5 cups of ice. Hope this helps! :)
Answer:
Step-by-step explanation:
c(25) = 85(25) + 600 = 2725