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Math History

Far more interesting than one might first expect, the history of mathematics is filled with bitter rivalries, political machinations, and incredible innovations by some of the most amazing minds in history. Post all questions concerning individual mathematicians, the development of mathematical theories, and the sociological impact that resulted into this category.

3,988 Questions

If L is the length of a room and W is the width then LW can be used to find the area of the room find the area of a room with L equals 15 and W equals 10 Feet?

What it is saying is that to get the Area of a room you must multiply the Length of the room times the Width of the room.

It is saying the Length (L) is 15, and the Width (W) is 10.

So, now you must multiply the Length (15) by the Width (10) to get your answer (the Area).

What is 50 meter in feet?

I do not know, but I do know that 1 inch = 2.54 centimeters.

50 feet (12 inches/1 foot)(2.54 centimeters/1 inch)(1 meter/100 centimeters)

= approximately 15 meters

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What has the vaule of -36?

The number -36 has the value -36. Any other number does not.

When was pi invented?

As a letter, pi has been around for around 3000 years; it has represented the following concept for just under 300. As a mathematical concept (the ratio of a circle's circumference to its diameter always being the same), pi has been used for around 4000 years.
The concept of PI was written about 3,912 years ago, because the earliest known textually evidenced approximations of PI date from around 1900 BC. They are found in the Egyptian Rhind Papyrus.

But only 306 years ago in 1706 AD William Jones was the first to use the Greek letter PI referring to the ratio of the perimeter to the diameter, which is constant for all circles.

How many 7 digit numbers can be formed by the digits 1 2 3 4?

This is a problem called a permuation (if order matters).

For the first digit, you have 4 choices, for the second, you also have 4 choices:

So, if it were a two digit number, you would have 16 choices:

11 21 31 41

12 22 32 42

13 23 33 43

14 24 34 44

Notice that 16 is 4 x 4. This pattern can be generalized to get the following formula (Fundamental counting prinicple):

You multiply the number of choices for each slot to get the total number of arrangements:

So, for your question, it is 4 x 4 x 4 x 4 x 4 x 4 x 4= 16384.

What is 0.077 in inches?

The answer depends on 0.077 WHAT!

0.077 inches is exactly 0.077 inches, while 0.077 miles is approx 4879 inches. And 0.077 parsecs is a whole lot of inches!

The answer depends on 0.077 WHAT!

0.077 inches is exactly 0.077 inches, while 0.077 miles is approx 4879 inches. And 0.077 parsecs is a whole lot of inches!

The answer depends on 0.077 WHAT!

0.077 inches is exactly 0.077 inches, while 0.077 miles is approx 4879 inches. And 0.077 parsecs is a whole lot of inches!

The answer depends on 0.077 WHAT!

0.077 inches is exactly 0.077 inches, while 0.077 miles is approx 4879 inches. And 0.077 parsecs is a whole lot of inches!

How many congruent angles does a hexagon have?

A regular 6 sided hexagon has 6 interior congruent angles of 120 degrees.

Who invented counting in tens?

Pre-historic humanoids who discovered that they had 10 digits on their hands.

How numbers were formed?

Gohd

Improved Answer:-

Numbers were once formed on a tally stick whereas 4 notches would indicate 4 and 4 notches with a line through them would indicate 5 and so on.

What are the powers of 10 called million billion trillion zillion then?

100 = one

101 = ten

102 = hundred

103 = thousand

104 = ten thousand

105 = hundred thousand

106 = million

109 = billion

1012 = trillion

1015 = quadrillion

1018 = quintillion

1021 = sextillion

1024 = septillion

1027 = octillion

1030 = nonillion

1033 = decillion

10100 = googol

10303 = centillion

1010^100 = googolplex

NB: 'a zillion' is not a real number.

Did John Venn have kids?

He had one child, a son John Archibald Venn, who became president of Queen's College, Cambridge, in 1932,