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nalin [4]
3 years ago
11

) Chứng minh rằng giá trị của biểu thức ((x-2√x)÷(√x-2) ) - ((x-4)÷√x+2)) không phụ thuộc vào giá trị của biến.

Mathematics
1 answer:
Mashutka [201]3 years ago
8 0

...........chúc bạn thành công ✊

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Does 15 year old girl get pregnant?
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Yes it is possible . She has already started a monthly cycle which means she'a able too get pregnant .
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Diego is playing basketball. While running at 7 km/h toward a basketball hoop, he throws the ball at the net. The ball travels a
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27 km/h (。◝‿◜。)

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If one would dissolve 60g of sugar in 300g of water, what would the concentration of sugar in this syrup be?
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1. A cheetah can run at a top velocity of 31 m/s and has a mass of 47 kg. What is the cheetahs kenetic energy?
Naily [24]

Answer:

1. 22583.5 J

2. 1248 kg

3. 78.09 m/s

Step-by-step explanation:

The formula for kinetic energy is ;

K.E = 1/2* m * v²

Where m is the mass and v is the velocity

1.

K.E = 1/2 * m*v²

K.E = 1/2 * 47 * 31²

K.E = 22583.5 J

2.

Velocity = 9.78 m/s.

Kinetic energy = 60,800 J

To get mass, apply the formula as;

K.E = 1/2 * m*v²

60,800 = 1/2 * m * 9.78²

60800 = 48.70845 m

60800/48.70845 = m

1248 = m

Mass = 1248 kg

3.

K.E = 143.3 J

Mass = 0.047 kg

Apply the formula;

K.E = 1/2 * m*v²

143.3 = 1/2 * 0.047 * v²

143.3 = 0.0235 v²

143.3/0.0235 = v²

6097.87 = v²

v = √6097.87

v= 78.09 m/s

4 0
3 years ago
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