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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
How many seconds are equal to 1 hour and 42 minutes?
1 hour = 60 minutes therefore 60 mins + 42 mins = 102 mins
102 mins x 60 seconds = 6120 seconds
6120 seconds
Is there pair lines that intersect but are not perpendicular?
Yes. Perpendicular lines intersect to form a right or 90 degree angle. Not all intersecting lines form a right angle.
Can 27 represent an even number in some scale?
yes ,when you convert 27 from base 10 to base 9 it is 30 and in base 7 it is 36
3 feet is the equivalent of 91.44 centimeters. 30.48 centimeters is equal to one foot. one meter has 100 centimeters
What is a quadrilateral with 2 pairs of parallel sides 2 pairs of equal sides and 4 right angles?
rectangle
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).
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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The number -36 has the value -36. Any other number does not.
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.
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.
