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Lorico [155]
1 year ago
6

Debra is fertilizing her garden. The garden is in the shape of a rectangle. Its length is 12 feet and its width is 10 feet. Supp

ose each bag of fertilizer covers 30 square feet. How many bags will she need to cover the garden?
Mathematics
2 answers:
KonstantinChe [14]1 year ago
7 0

Answer:

If I'm correct the answer is 4

Step-by-step explanation:

Not 100% sure if I'm correct but if Debra's garden is 12 feet in length and 10 feet in width then you would multiply 10 × 12 that would be 120. Then divide 120 to 30 and you get your answer, 4. ( not 100% sure )

Alex_Xolod [135]1 year ago
4 0
She would need 40 bags.

First find the area of the rectangle by multiplying 10 and 12 ft together. You should get 120 sq ft. Then divide by the bags that cover 30 sq feet and you get 40. 40 bags are needed :)
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an open rectangular cardboard box with a square base is to have a volume of 256cm^3. Find the dimensions of the box if the area
Anit [1.1K]
Let
x------> the length side of the square base of the box
y-------> the height of the box

we know that
volume of the box=b²*h
b=x
h=y
volume=256 cm³
so
256=x²*y------>y=256/x²-------->  equation 1

<span>The amount of material used is directly proportional to the surface area, so we will minimize the amount of material by minimizing the surface area.</span>

surface area of the cardboard=area of the base+perimeter of base*height
area of the base=x²
perimeter of the base=4*x
height=y
surface area=x²+4x*y-----> equation 2
substitute equation 1 in equation 2
SA=x²+4x*[256/x²]-----> SA=x²+1024/x

step 1 
find the first derivative of SA and equate to zero
2x+1024*(-1)/x²=0------> 2x=1024/x²----> x³=512--------> x=8 cm
y=256/x²------> y=256/8²-----> y=4 cm

the answer is
the length side of the square base of the box is 8 cm
the height of the box is 4 cm

5 0
3 years ago
A chef planning for a large banquet thinks that 2 out of every 5 dinner guest will order his soup appetizer he expects 800 guest
Masteriza [31]

Answer:

320 cups of soup

Step-by-step explanation:

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2/5 = 320/800

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6 0
3 years ago
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GrogVix [38]

Answer:

12.2%

Step-by-step explanation:

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3 years ago
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nikklg [1K]

Answer:

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Step-by-step explanation:

If she has the car for  One day she can drive 2000 miles.

if she has the car for 2 days she can drive 1500

if she has the car for 3 days she can drive 1000

If she has the car for 4 days she can drive 500

8 0
2 years ago
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Eddi Din [679]
3.14(radius)squared(height)(3)
3.14(9)(8)(3)
3.14(72)(3)
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4 0
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