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erik [133]
3 years ago
13

A closed box with square base is to be built to house an ant colony. the bottom of the box and all four sides are to be made of

material costing $2/ft2, and the top is to be constructed of glass costing $4/ft2. what are the dimensions of the box of greatest volume that can be constructed for $72? (enter the dimensions (in feet) as a comma separated list.)
Physics
1 answer:
LUCKY_DIMON [66]3 years ago
5 0
Box has all sides same leinght(a). Area of that box is 6*a^2.
Cost of material for bottom and 4 sides is 2$/ft^2. Area of bottom and sides is A=5*a^2
Cost of material for top is 4$/ft^2. Area of top of the box is T=a^2

A*2+T*4=72
5*a^2*2+a^2*4=72
a^2*(10+4)=72
a^2*14=72, a^2=72/14, a=root(72/14), a=2.267ft
Dimensions of the box: leinght of sides 2.2ft. Area of hole box 30.835ft^2
Area of the bottom and sides: A=5*a^2=25.696ft^2
Area of the top : T=a^2=5.139ft^2
Check: A*2$+T*4$=71.95$
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3 years ago
Barney walks at a velocity of 1.7 meters/second on an inclined plane, which has an angle of 18.5° with the ground. What is the h
Viktor [21]
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<span>So the x-velocity is: speed*cos(angle) </span>

<span>now plug in </span>
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A compound has a melting point of 812°C. what type of bonding is in the compound?
AURORKA [14]

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Ionic compound.

Explanation:

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7 0
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Acceleration is the rate of change of velocity

 

To define acceleration, We need to know more about motion.

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<u>Definition</u>

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The formula of acceleration is

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Learn more about acceleration here: brainly.com/question/605631

5 0
2 years ago
Read 2 more answers
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