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iragen [17]
3 years ago
13

The average mass of a group of X people in a class is 60 kg. Albert, Ben and Carl join the group and the new average mass is 20

kg The average mass of Alpert, Ben and Carl is 100 kg.
What is the value of x? ​
Mathematics
1 answer:
elena-s [515]3 years ago
8 0

Step-by-step explanation:

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The force F of gravity on a rocket varies directly with its mass m and inversely with the square of its distance d from Earth. W
xz_007 [3.2K]

Model for the Combined variation  is  F = \frac{km}{d^{2} }

Equation to find the mass of the rocket in terms of F and d is :

m=\frac{F d^{2} }{k}

<h3>What is Force ?</h3>

A force is the quantity that change the motion of the object. Force is that influence which can cause any object having some mass, to change it's position or to accelerate from it's original position.

Force (F) and mass (m) of any object are  directly proportional to each other. More the mass of the object , more the force will require to accelerate it.

Mathematically, we can write the equation of force as :

F = m . a

where , m = mass of the object

             a = constant value

In the statement given,

As, force of gravity varies directly with its mass

Therefore, F= k m , where k is a constant

Also force is inversely varies with square of distance d

Thus, F = k / d²

Combining both equations :

F = \frac{km}{d^{2} }  

and the equation of mass in terms of F and d can be written as :

m=\frac{F d^{2} }{k}

To know more about Force and it's equation, visit :

brainly.com/question/14857727

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7 0
1 year ago
What is the area of this triangle?
Alex17521 [72]
Well, you would have to mutiply the length and width and then divide that by 2 to get your area for the triangle
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Select the graph that does not represent two quantities in a proportional relationship. PLEASE HELP
Nostrana [21]
The answer to your problem is c
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3 years ago
What is 12229 divided by 175? Please help.
alina1380 [7]

Answer: 12229/175= 69.88

3 0
3 years ago
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rodikova [14]

Answer:

5

Step-by-step explanation:

to find the answer you need to put this equation into a calculator

the square root of (4-8) squared + (3-6) squared

to find the distance this is put in the distance formula of

the square root of (x2-x1)squared + (y2-y1)squared

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