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Genrish500 [490]
3 years ago
11

Five added to 2 times a number is equal to 7 less than 4 times a number. What is the number?

Mathematics
1 answer:
fomenos3 years ago
6 0

2x+5=4x-7 that's the equation.

The number is 6, I believe. The way to do that is...

You have to put 2x on the other side

then add 7 to both sides

then divide both sides by 2

here is the worked out thing ↓↓↓

2x+5=4x-7

-2x     -2x

---------------

5=2x-7

+7    +7

------------

12=2x

/2  /2

--------

6=x

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How far can the center of the box be from the end of the table before the board begins to tilt?
Vesnalui [34]

in case of box start being tilt,

box should be half out the table,

<h3>What is COM?</h3>

The Center of Mass of an object or system of objects is a location that is specified in relation to those objects. The Center of Mass of a system is the location where all of its components are on average when they are all weighted in accordance with their masses. The centroid is where basic stiff objects with homogenous density have their centers of mass. Sometimes an object's Center of Mass might not be directly over it. The Center of Mass would be on the Center in the event of a uniform disc, but there would be no material in the case of a ring where the Center of Mass would be on the Center.

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In this we can use the Center of Mass concept,

As it will leave table when normal is not acting from the table at the center of mass.

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Need help with simplifying expressions
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murzikaleks [220]
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