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Who was first credited for matrices?
The Chinese text The Nine Chapters on the Mathematical Art (Jiu Zhang Suan Shu), from between 300 BC and AD 200, is the first example of the use of matrix methods to solve simultaneous equations. (Wikipedia)
How do you find 31 percent of 200?
To find 31 percent of 200 you will solve it like this: 31% of 200 is: 0.31* 200= 62. Using a calculator will also help.
How do you solve the problem 'How many tens equals twenty hundreds'?
Simply divide by 10. 20 hundreds equal 20 x 100, or 2,000. Divide 10 into 2000 and you get 200. 200 tens equal 20 hundreds. To check your work ask yourself, does 200 x 10 = 20 x 100? 200 x 10 = 2,000 and 20 x 100 = 2,000. The answer is correct.
What is the answer to this problem -40 equals b over 5?
To solve, think of it as something (b) over 5 is -40, which means that something divided by 5 is -40, so that something must be 5 times -40 or -200.
How do you solve 1000 20 percent?
20 percent of 1000 = 200 20% of 1000 = 20% * 1000 = 20%/100% * 1000 = 200
