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What is a definition of number line?
In basic mathematics, a number line is a picture of a graduated straight line that serves as abstraction for real numbers, denoted by R{\displaystyle \mathbb {R} }. Every point of a number line is assumed to correspond to a real number, and every real number to a point. Often integers are shown as specially-marked points evenly spaced on the line.
Is the credit card number the same as the account number?
No, The credit card number is the long string of numbers embossed on the card. The account number is not shown on the credit card - it will be on your statements.
Which numbers can be shown only as a line?
Real numbers.
How do you graph the addition of complex numbers?
Consider the Complex Plane, with Real numbers along the horizontal axis, and Pure Imaginary numbers on the vertical axis. Any Complex number (a + ib) can be plotted as a point (a,b) on this plane. The point can be represented as a vector from the 'origin' (0,0) to the point (a1,b1). If the second 'complex vector' (a2,b2) is added to the first, this can be shown as a translated vector with it's 'tail' starting at the arrowhead of the first vector, and then the arrowhead of the second vector will terminate at the sum of: a1 + ib1 + a2+ ib2 [coordinate point: (a1+a2,b1+b2)
How do you make a subtraction problem look like an addition?
In most mathematics, it is implied that all numbers are positive. Negative numbers are invariably shown prefixed by a -ve sign. To help clarification, a positive number may occasionally be shown preceded by a +ve sign. The subtraction of a positive number equates to the addition of a negative number. EXAMPLE : 7 - 2 = 5 equates to 7 + (-2) = 5
