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How to identify Sparse matrix?
A sparse matrix is one which normally contains a large proportion of elements whose value is 0. There is no exact proportion at which a matrix becomes sparse.
Why is pi a constant?
Pi is a constant because it is the ratio of the circumference to the diameter of a circle and they are always in the exact same proportion.
Definition of indirect proportion?
Indirect proportion is more famously known as Inverse Proportion. Inverse proportion is the exact opposite of Direct Proportion. Inverse Proportion -As one quantity increases other quantity decreases. An example problem: If 4 painters can paint a house in 6 days then how many days can 8 painters paint a house of the same size? To solve, use cross product 4 painters=6 days 8 painters=x 4x6=24 24/8=3 To paint the same house,8 painters need 3 days.
How can the pythagorean spiral be used to show the exact value of an irrational number?
It cannot. It can only show square roots which represent only a small proportion of irrational numbers.
What is 8.16 to the nearest hundredth?
The number 8.16 is stated as an exact number of hundredths and therefore cannot be rounded off to the nearest hundredth. It can be rounded off to the nearest tenth when it becomes 8.2, or to the nearest unit when it becomes 8, to the nearest ten when it becomes 10, and finally to the nearest hundred or greater unit when it becomes 0 (zero). The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1".
