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3 years ago

126/21 The simplest form

Mathematics

1 answer:

Marina CMI [18]3 years ago

8 0

$\dfrac{126}{21} = \dfrac{2 \times 3 \times 3 \times 7}{3 \times 7} = 6$

Answer: 6

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A brick of mass 4 kg hangs from the end of a spring. When the brick is at rest, the spring is stretched by 3 cm. The spring is t

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Answer:

Step-by-step explanation:

In this system we have the force of the spring and the gravitational force. The equation that describes that is

$F_{s}+F{g}=ma\\k(y_0+y)-mg=ma$

where y0 is the equilibrium position when the string is free and y0+y is the new equilibrium position when the object is hanged of the string. By replacing by derivatives we have

$ky_0+ky-mg=ma\\mg+ky-mg=ky=ma\\\\ky=m\frac{d^2y}{dt^2}\\\\my''+ky=0$

the solution for this differential equation is (by using the characterisic polynomial)

$y(x)=Acos(kt)+Bsin(kt)\\k=\omega^2m$

hope this helps!!

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3 years ago

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Answer:

The horizontal shift depends on the value of h h. The horizontal shift is described as: g(x) = f (x+h) g ( x) = f ( x + h) - The graph is shifted to the left h h units. g(x) = f (x−h) g ( x) = f ( x - h) - The graph is shifted to the right h h units. The vertical shift depends on the value of k k.

Step-by-step explanation:

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Divide. Round your answer to the nearest whole number. 91,543 = 5 =

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Answer:

i assume you mean divide so its 18308

Step-by-step explanation:

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2 years ago

a barrel had 20 liters of water. water leaked out from the barrel at a constant rate. after 24 hours, 14 liters of water was lef

Rzqust [24]

Initial volume of water = 20 litres
Final volume of water = 14 litres

Leaked volume of water = 6 litres
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3 years ago

What is 20 precent of 25

satela [25.4K]

Answer:

<h2>20 percent *25 = x</h2><h2 /><h2>( 20:100)*25 = x</h2><h2 /><h2>( 20*25):100 = x</h2><h2 /><h2>500:100 = x</h2>

 

hence , 20 percent of 25 is 5 .

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3 years ago

126/21 The simplest form￼

126/21 The simplest form