Math and Arithmetic

Four times the square of a number is 16 Find the number?

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2010-04-01 15:03:41
2010-04-01 15:03:41

You need to work backwards from the answer of 16.

Dividing 16 by 4 gives you 4.

The Square root of 4 is 2.

Your number is 2.

Check your answer -

2 squared is 4. 4 times this 4 is 16.

It can also be -2 (minus or negative 2) because when you multiply (or square) two negative numbers, the answer becomes a positive number.

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There is normally a square root button on your calculator The square root of a number is a number times itself. Most square roots are memorized, such as the square root of 16 being four. The easiest way to find a square root is using the root function on a calculator. you find the square route by thinking what times this number equals this number. For example.... the square route of 64 is 8 because 8x8 equals 64. Basically the same number times itself. Another example 12x12=144 notice the factors are the same.


a square root is a number that when multiplied by itself gives a particular answer. 4x?=16 4x "the square root of 16"=16..we choose 16 because its square is 4 and when multiplied by itself gives us the final answer 16.


The distance around a square is four times the length of one side.


The perimeter of a square is equal to exactly four times the length of any one side of that square.


To square a number means that the number is to be multiplied two times. so, square of 4 is 16(4 mutiplied with 4,gives you 16).


4n2 = 8n + 12 n2 - 2n - 3 = 0 (n - 3)(n + 1) = 0 n = -1, 3 Since it has to be positive, the answer is 3.


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Cut 5184 in half six times, then divide that number by 3 four times.


-1,0,or 1 the negative square root of four is negative two and the square root of four is two



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Square root of one is one, so four times this is four, add 9 is 13


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The perimeter of a square is four times the length of its side.


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The four times table is a chart with all the multiple facts of the number four.


The number that is twenty-one times greater than four is eighty-four.



Since a square has four sides of equal length, each side is 12/4 or 3 feet long. To find area, multiply length times width, which in a square is the same number. Area = 3 x 3 = 9 square feet. Remember area is always square units.


its easy really!! All you have to do is divide the perimeter by 4 (because a square has four sides!) once you got that answer you then times that by its self and you have the area!! :)



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