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zheka24 [161]
3 years ago
9

Draw a rectangle that has a area of a square Units and a perimeter of 12 units what are the side length of the rectangle

Mathematics
1 answer:
inysia [295]3 years ago
7 0
Let s represent the length of one side of this rectangle, and w represent the width of the rectangle (length of one end).  Then 2s + 2w = 12 units, and the area is a = s*w.  Using the previous equation we can eliminate either s or w.  Since we want s, eliminate w:  2w = 12 - 2s, or w = 6 - s.

Then the area of the rect. is a = s(6 - s) = 6s - s^2.

You have not shared the actual area of the rect., but have represented it by "a."

Suppose that the area is given and is 90.  Then 90 square units = 6s - s^2, so that -s^2 + 6s - 90 = 0.  Using the Pyth. Thm., we find s as follows:

       -6 plus or minus sqrt( 6^2 - 4(-1)(-90)
s = ---------------------------------------------------
                            2(-1)

Unfortunately, s would come out as a pair of complex numbers, which is not possible in a situation where you're calculating lengths.

Please recheck this problem.  Was the aera of the rectangle, a, given?
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3 years ago
What is the square rout of 56
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Cho biết DABC ∽DMNP theo tỉ số 2/3 và chu vi của DABC là 12cm. Chu vi của DMNP là .Kết luận đúng là:
artcher [175]

Answer:

C

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which data set has an outlier? 25, 36, 44, 51, 62, 77 3, 3, 3, 7, 9, 9, 10, 14 8, 17, 18, 20, 20, 21, 23, 26, 31, 39 63, 65, 66,
umka21 [38]

It's hard to tell where one set ends and the next starts.  I think it's

A. 25, 36, 44, 51, 62, 77

B. 3, 3, 3, 7, 9, 9, 10, 14

C. 8, 17, 18, 20, 20, 21, 23, 26, 31, 39

D. 63, 65, 66, 69, 71, 78, 80, 81, 82, 82
Let's go through them.

A. 25, 36, 44, 51, 62, 77

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B. 3, 3, 3, 7, 9, 9, 10, 14

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C. 8, 17, 18, 20, 20, 21, 23, 26, 31, 39

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D. 63, 65, 66, 69, 71, 78, 80, 81, 82, 82

Average around 74, sigma 8, seems very tight.

I guess we conclude C has the outlier 39.  That one doesn't seem like much of an outlier to me; I was looking for a lone point hanging out at five or six sigma.  



3 0
3 years ago
Read 2 more answers
M i crrect please explain
kvv77 [185]
I got -6/25 Sorry I can't really explain this try web2.0calc.com it helps alot with math.
8 0
3 years ago
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