| [+] Radical Expressions |
| [+] Random Number Generator |
[+] Random Sampling from the Normal DistributionFree Random Sampling from the Normal Distribution Calculator - This performs hypothesis testing on a sample mean with critical value on a sample mean or calculates a probability that Z <= z or Z >= z using a random sample from a normal distribution.
Features: Calculator | Quiz Generator | Practice Problem GeneratorTags:
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[+] Random TestFree Random Test Calculator - Given a set of data and an α value, this determines the test statistic and accept/reject hypothesis based on randomness of a dataset.
Features: Calculator | Quiz GeneratorTags:
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[+] Rates of ReturnFree Rates of Return Calculator - Given a set of stock prices and dividends if applicable, this calculates the periodic rate of return and the logarithmic rate of return
Features: Calculator | Practice Problem GeneratorTags:
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[+] Ratio Word ProblemsFree Ratio Word Problems Calculator - Solves a ratio word problem using a given ratio of 2 items in proportion to a whole number.
Features: Calculator | Practice Problem GeneratorTags:
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| [+] Rational Exponents - Fractional Indices |
[+] Rational Number SubtractionFree Rational Number Subtraction Calculator - Subtracting 2 numbers, this shows an equivalent operations is adding the additive inverse. p - q = p + (-q)
Features: Calculator | Practice Problem Generator
Examples (1):
15-5Tags:
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[+] Rational NumbersFree Rational Numbers Calculator - This lesson walks you through what rational numbers are, how to write rational numbers, rational number notation, and what's included in rational numbers
Features: Calculator | Practice Problem Generator | Watch the VideoTags:
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| [+] Rational Numbers Between |
[+] Rational,Irrational,Natural,Integer PropertyFree Rational,Irrational,Natural,Integer Property Calculator - This calculator takes a number, decimal, or square root, and checks to see if it has any of the following properties:
* Integer Numbers
* Natural Numbers
* Rational Numbers
* Irrational Numbers
Handles questions like:
Irrational or rational numbers
Rational or irrational numbers
rational and irrational numbers
Rational number test
Irrational number test
Integer Test
Natural Number Test
Features: Calculator | Practice Problem Generator | Watch the Video
Examples (4):
is 34 natural
is 85.6 rational
prove 99.7 is rational
is 45 an integerTags:
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| [+] Ratios |
| [+] Real Numbers |
| [+] Rebound Ratio |
[+] Receivables RatiosFree Receivables Ratios Calculator - Given Net Sales, Beginning Accounts Receivable, and Ending Accounts Receivable, this determines Average Accounts Receivable, Receivables turnover ratio, and Average Collection Period.
Features: Calculator | Practice Problem GeneratorTags:
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| [+] Rectangle Word Problem |
| [+] Rectangles and Parallelograms |
| [+] Rectangular Number |
| [+] Rectangular Solid |
| [+] Reference Angle |
| [+] Reflexive Property |
| [+] Regrouping |
[+] Relative CoordinatesFree Relative Coordinates Calculator - Given a starting point (x1,y1), this will determine your relative coordinates after moving up, down, left, and right.
Features: Calculator | Quiz Generator | Practice Problem Generator | Watch the Video
Examples (2):
Starting at a point of (1,5), you move 2 spaces up, 3 spaces left
Starting at a point of (1,5), you move 2 spaces up, 8 spaces right, 7 spaces down, 3 spaces leftTags:
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| [+] Relative Error |
| [+] Repeating Decimal |
| [+] Resistor Color Codes |
| [+] RGB and HEX conversions |
[+] RhombusFree Rhombus Calculator - Given inputs of a rhombus, this calculates the following:
Perimeter of a Rhombus
Area of a Rhombus
Side of a Rhombus
Features: Calculator | Watch the VideoTags:
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[+] Right TrianglesFree Right Triangles Calculator - This solves for all the pieces of a right triangle based on given inputs using items like the sin ratio, cosine ratio, tangent ratio, and the Pythagorean Theorem as well as the inradius.
Features: CalculatorTags:
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| [+] Roman Numeral Conversions |
| [+] Roster Notation |
| [+] ROT-13 Conversions |
| [+] Roulette |
[+] Roulette Cumulative BettingFree Roulette Cumulative Betting Calculator - This calculator displays the probability and return grid for a roulette scenario where you play x games, betting y per number playing z numbers per game.
Features: Calculator | Practice Problem GeneratorTags:
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| [+] Rounding |
| [+] Rounding to Decimal Places |
| [+] Rule of 72 |
| [+] Rule of Succession |
| [+] Run Length Encoding |
