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lora16 [44]
3 years ago
14

A rectangular field has an area 28800 sq meter. Its length is twice as long as its width. What is the length of its sides?

Mathematics
1 answer:
mina [271]3 years ago
3 0
W= width L= length = 2W

Area of Rectangle= Length * Widthsubstitute the area and the value of L in the formula
28,800 m^2= 2W * W
28,800= 2W^2divide both sides by 2 in an effort to isolate the variable w
14,400= W^2take the square root of both sides
√14,400= W^2
we want the negative and positive root of the radicand (the number under the radical symbol - 14,400 in this case)
120= w OR -120= w


LENGTHL= 2W= 2(120)= 240 meters

ANSWER: The side lengths are W= 120 m; L= 240 m.  Even though W= -120 too, it is not a valid solution in this case since a field cannot have a negative value.

Hope this helps!  :)
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Romashka [77]
You can either convert -3 into a fraction, or convert -2/5 into a decimal so you can solve this.
If you decide to convert -3, into a fraction, it would be -3/1, and you'd have to multiply that by the reciprocal of -2/5.
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If you decide to convert -2/5 into a decimal, you would get -0.4. You would then divide -3 by -0.4, which is equal to 7.5.
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5 0
3 years ago
A picture frame is 16 inches long and 9 inches tall. It is 2 inches wide on all 4 sides. What is the area of the picture frame?
Ira Lisetskai [31]
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area=lenght times width
so

inner one
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4 0
3 years ago
How much interest would you earn in 3 years on a $225 deposit with a 6%<br> interest rate?
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$40.5

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3 0
3 years ago
EVAN
CaHeK987 [17]

Answer:

n = -8

Step-by-step explanation:

Given the expression

(-2y-3) + (-6y-5) =  (ny -8),

Expanding the LHS

-2y-3 - 6y -5 = ny - 8

-2y-6y-3-5 = ny - 8

-8y - 8 = ny - 8

Compare both sides

-8y = ny

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Swap

n = -8

Hence the value of n is -8

3 0
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Help it is due tomorrow morning​
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Answer:

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2. trapezoid

3. rectangle

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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