Which of the following options is the primary purpose of a polar coordinate system? the primary purpose of a polar coordinate system is to create ordered pairs. the primary purpose of a polar coordinate system is to tell x and y locations. the primary purpose of a polar coordinate system is to determine the position of a point. the primary purpose of a polar coordinate system is to calculate lengths and angles between points.

The primary purpose of a polar coordinate system is to calculate lengths and angles between points

Step-by-step explanation:

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A polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from a reference point and an angle from a reference direction,Polar coordinates are best used when periodic functions are considered,in fact, describing position is therefore far more natural than using two distances on a grid

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answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.