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shtirl [24]
3 years ago
13

7.

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
8 0
The answer is 365 don’t listen to me
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the city park department is planning to enclose a play aea. one side of the area will be against an existing building, so no fen
SVEN [57.7K]

Answer:

length = 200 m

width = 400 m

Step-by-step explanation:

Let the length of the plaing area is L and the width of the playing area is W.

Length of fencing around three sides = 2 L + W = 800

W = 800 - 2L ..... (1)

Let A is the area of playing area

A = L x W

A = L (800 - 2L)

A = 800 L - 2L²

Differentiate with respect to L.

dA/dL = 800 - 4 L

It is equal to zero for maxima and minima

800 - 4 L = 0

L = 200 m

W = 800 - 2 x 200 = 400 m

So, the area is maximum if the length is 200 m and the width is 400 m.

8 0
3 years ago
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36 kg bag of cement was dropped losing one tenth of cement. How much was left in the bag of cement ?
kow [346]

Answer:

32.4kg

Step-by-step explanation:

if it loses one tenth of cement;

36kg×1/10

36kg/10

3.6kg was lost

to find the remaining ; 36kg - 3.6kg = 32.4kg is left in the bag

7 0
3 years ago
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Simone wrote that 2+5.8=6.
hjlf
1+5.8= 6.8
0.2+5.8=6
5 0
2 years ago
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What is the sum of the polynomials?<br> (7x² - 4x²) + (2x² - 4x²
bija089 [108]

Answer: It would be x^2 I think

6 0
3 years ago
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If tan0=3/4 find sin0
krok68 [10]

Answer:

H2=02+A2

H2=9+16

=25

Step-by-step explanation:

sino =0/H

3/5

5 0
3 years ago
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