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Sindrei [870]
2 years ago
13

Which lengths could be the sides of a triangle?

Mathematics
2 answers:
Wittaler [7]2 years ago
6 0
The sum of the smaller sides exceeds the larger side...
A --> 13 + 5 = 18 --> 18>17 --> triângulo
Ugo [173]2 years ago
5 0
The answer is A. 17 cm, 5 cm, 13 cm

For the triangle:
a+b > c
b+c > a
a+c > b

Check all choices:
<span>A. 17 cm, 5 cm, 13 cm
a = 17
b = 5
c = 13
17+5 = 22
22 > 13
5+13= 18
18 > 17
17+13=30
30>5

If you check other choices, you will see they are incorrect.</span>
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zhenek [66]

Answer:

Used wire in circle  x = 2.64 m

Used in square   L - x = 3.36 m

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Step-by-step explanation:

We have a wire of 6 meters long.

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x    and   6 - x

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we have

( 6 - x )/ 4  is the side of the square

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Total area as function of x is

A(t)  = A(c) + A(s)

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A(x)  =   x²/4π  + (36 + x² - 12x) /16

A(x)  = 1 / 16π [ 4x² + 36π + πx² -  12π x ]

Taking drivatives on both sides of the equation we get:

A´(x) = 1/ 16π [8x +2πx - 12π]

A´(x) = 0    ⇒      1/ 16π [8x +2πx - 12π]  = 0

[8x +2πx - 12π]  = 0

8x + 6.28x -  37.68  = 0

14.28x - 37.68 =  0      ⇒  x  = 37.68 /14.28

x = 2.64 m   length of wire used in the circle

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(6 - x )/4    ⇒ ( 6 - 2.64 )/ 4   ⇒ 3.36 / 4    

L = 0.84 m   total length of wire used in the square is

3.36 m

And total length of wire used is 6 m

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3 years ago
Solve Ax-By=c for y how do you solve this
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Answer:

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