I think 8 or 7 because its -3 so +3 to the 5 minutes or 2 since it is a sprinkler hope i help 
Substitute x = (- 1 + 2√2)/4 in the equation (4x + 1)² - 8 = 0 and check whether the value satisfies the given equation.
1 answer:
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Answer:
The dimensions that minimize the surface are:
Wide: 1.65 yd
Long: 3.30 yd
Height: 2.20 yd
Step-by-step explanation:
We have a rectangular base, that its twice as long as it is wide.
It must hold 12 yd^3 of debris.
We have to minimize the surface area, subjet to the restriction of volume (12 yd^3).
The surface is equal to:
The volume restriction is:
If we replace h in the surface equation, we have:
To optimize, we derive and equal to zero:
Then, the height h is:
The dimensions that minimize the surface are:
Wide: 1.65 yd
Long: 3.30 yd
Height: 2.20 yd
