Math Lessons starting with the letter R

[+] Radical Expressions [+] Random Number Generator [+] Random Sampling from the Normal Distribution

Free 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 Generator
Tags:

[+] Random Test

Free 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 Generator
Tags:

[+] Rates of Return

Free 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 Generator
Tags:

[+] Ratio Word Problems

Free 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 Generator
Tags:

[+] Rational Exponents - Fractional Indices [+] Rational Number Subtraction

Free 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):
15-5
Tags:

[+] Rational Numbers

Free 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 Video
Tags:

[+] Rational Numbers Between [+] Rational,Irrational,Natural,Integer Property

Free 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 integer
Tags:

[+] Ratios [+] Real Numbers [+] Rebound Ratio [+] Receivables Ratios

Free 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 Generator
Tags:

[+] Rectangle Word Problem [+] Rectangles and Parallelograms [+] Rectangular Number [+] Rectangular Solid [+] Reference Angle [+] Reflexive Property [+] Regrouping [+] Relative Coordinates

Free 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 left
Tags:

[+] Relative Error [+] Repeating Decimal [+] Resistor Color Codes [+] RGB and HEX conversions [+] Rhombus

Free 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 Video
Tags:

[+] Right Triangles

Free 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: Calculator
Tags:

[+] Roman Numeral Conversions [+] Roster Notation [+] ROT-13 Conversions [+] Roulette [+] Roulette Cumulative Betting

Free 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 Generator
Tags: