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Svetllana [295]
2 years ago
14

The perimeter of a rectangular pool is 258 m.

Mathematics
1 answer:
postnew [5]2 years ago
5 0

Answer:

78

Step-by-step explanation:

Im 99% sure this is right because

51x2=102

258-102=156

156÷2=78

^•^

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Which of these is a simplified form of the equation 15x + 4 = 5 + 3x + 1x? (2 points)
Mars2501 [29]

Answer:

11x=1

Step-by-step explanation:

15x+4=5+3x+1x       Bring everything with an x in front of it to the left side

15x-3x-1x+4=5         Simplify the x values

11x+4=5                    Bring the 4 to the right side

11x=5-4

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2 years ago
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Answer:

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Step-by-step explanation:

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The Length of a rectangle exceeds its breadth by 9 cm. if length and breadth are each increased by 3 cm, the area of new rectang
gizmo_the_mogwai [7]

Answer:

Breadth = 8 cm

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Step-by-step explanation:

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Area = length * breadth

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       = x² + 9x

Rectangle with length and breadth increased:

Breadth = x + 3 cm

Length = x + 9 + 3 = x + 12 cm

Area = 84 + (x² + 9x) cm²

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Use FOIL method

x*x  + x*12 + 3*x + 3*12 = 84 + x² + 9x

      x² + 12x + 3x + 36  = 84 + x² + 9x  {add the like terms}

             x² + 15x  + 36  = 84 + x² + 9x

x² + 15x + 36 - 84 - x² - 9x = 0

      6x - 48 = 0

             6x = 48

             x = 48/6

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Breadth = x = 8 cm

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7 0
3 years ago
Can someone please solve this
mote1985 [20]
That’s pretty easy you just have to basically y=mx+b
5 0
2 years ago
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Neporo4naja [7]

Answer:

0

Step-by-step explanation:

the derivative is zero since it has no variable

7 0
3 years ago
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