WGA Grade 9 Mathematics - Tranche B

Patrick M.
40 words 13 learners

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Full list of words from this list:

words only definitions & notes
  1. power
    notation indicating a quantity multiplied by itself
  2. equal
    having the same quantity, value, or measure as another
  3. circle
    a plane curve with every point equidistant from the center
    a figure with all points the same distance from the center.
  4. profit
    excess of revenues over outlays in a given period of time
  5. area
    the extent of a two-dimensional surface within a boundary
    Area of a circle: A=Pi*r*r = A=Pi*r^2
  6. origin
    the point of intersection of axes on a coordinate plane
    where (x,y) = (0,0)
  7. unknown
    a variable whose values are solutions of an equation
  8. model
    a representation of something, often on a smaller scale
  9. function
    a relation such that one thing is dependent on another
  10. slope
    the property of a line that departs from the horizontal
    change in y divided by change in x.
  11. solution
    the successful action of solving a problem
  12. substitute
    serving or used in place of another
  13. variable
    a quantity that can assume any of a set of values
    for example, "x" and "y" in y = 2x + 3
  14. mathematics
    a science dealing with the logic of quantity and arrangement
  15. diameter
    the length of a straight line through the center of a circle
  16. hypothesis
    a tentative insight that is not yet verified or tested
  17. analyze
    consider in detail in order to discover essential features
  18. arithmetic
    mathematics dealing with numerical calculations
  19. circumference
    the length of the closed curve of a circle
    Circumference = Pi multiplied by Diameter
    C = Pi*d or
    C = 2*Pi*r
  20. simplify
    make easier or reduce in complexity or extent
  21. equation
    a mathematical statement that two expressions are the same
  22. radius
    a straight line from the center to the perimeter of a circle
  23. exponent
    notation of how many times to multiply a quantity by itself
  24. ellipse
    a closed plane curve with an oval shape
  25. correlation
    a statistic representing how closely two variables co-vary
  26. variability
    the quality of being subject to change
  27. graph
    a visual representation of the relations between quantities
  28. perimeter
    the size of something as given by the distance around it
  29. modeling
    the act of representing something
  30. Archimedes
    Greek mathematician and physicist noted for his work in hydrostatics and mechanics and geometry (287-212 BC)
    one of the most interesting and intriguing of Mathematicians.
    developed a number of anti-seige defenses for his hometown of Syracuse to fend off the Roman invaders.
  31. square root
    a number that when multiplied by itself equals a given number
  32. Gauss
    German mathematician who developed the theory of numbers and who applied mathematics to electricity and magnetism and astronomy and geodesy (1777-1855)
    developed important theories related to the occurrence prime numbers (predictably descreasing probability of a prime occurring within a range of numbers as the numbers grow larger) as a young man of 15 years of age.
  33. binomial
    a quantity expressed as a sum or difference of two terms
    two terms, typically in an Algebraic expression, for example: 4x + 7
    bi- typically indicates two of something, for example: bicycle has 2 cycles or wheels
  34. prime number
    an integer that has no integral factors but itself and 1
    the building blocks of math (like atoms in chemistry) to form larger numbers. Used in securing digital networks (the Internet) and computers.
  35. direct correlation
    a correlation in which large values of one variable are associated with large values of the other and small with small; the correlation coefficient is between 0 and +1
  36. time series
    a series of values of a variable at successive times
  37. polynomial
    a mathematical function that is the sum of a number of terms
    for example y = 3x^2 - 5x + 7 ("3x^2" represents the term "three x squared"
  38. linear equation
    a polynomial equation of the first degree
    for example, y = 2x - 3
  39. histogram
    a bar chart representing a frequency distribution
  40. indirect correlation
    a correlation in which large values of one variable are associated with small values of the other; the correlation coefficient is between 0 and -1
Created on 十月 13, 2012 (updated 十月 22, 2012)

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