Answer:
0.03 feet
Step-by-step explanation:
d = 0.03r² + r
When d = 0: 0.03r² + r = 0
r(0.03r + 1) = 0
∴ r = 0
When r = 0: d = 0.03 feet
Answer:
A) 3(x+6)
Step-by-step explanation:
Given,
The area of the model = (6x+18)
If the dimensions of the model are, x unit × y unit,
Then,
xy = 6x + 18
If x = 3, y = x + 6
3(x+6) = 3x + 18 ( by distributive property )
∴ Option A doesn't represent the dimensions of the model,
If x = 6, y = x + 3
6(x+3) = 6x + 18
∴ Option B represents the dimensions of the model,
If x = 0.5, y = 12x+36
0.5(12x+36) = 6x + 18
∴ Option C represents the dimensions of the model,
If x = 0.25, y = 24x + 72
0.25(24x+72) = 6x+18
∴ Option D represents the dimensions of the model,
Answer:
the top middle and two at the bottom
