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Mixed last year

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    mixed math exercises
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  • Give the equation of this circle
    (x+2)^2+(y-3)^2=25
  •  10
  • What is the centre/radius of circle (x+1)^2+(y-5)^2=100
    centre: (-1;5), radius 10 units
  •  10
  • It takes Rita 5 hours to finish a project alone. It takes Dan 4 hours. How long do they take together?
    2.22hours
  •  15
  • What is the volume of this solid?
    6031.86cm^3
  •  10
  • What is the volume of this solid?
    333.79cm^3
  •  15
  • What is the area of the regular hexagon with 10-cm sides?
    259,81cm^2
  •  10
  • How many diagonals does this shape have?
    9
  •  10
  • Find x
    2.05
  •  10
  • Which trig function can you use to find x?
    tangent
  •  5
  • What is the formula of this function?
    |x+2|-3
  •  10
  • Find the formula of this function.
    x^2
  •  5
  • How many games need to be in a championship with 12 teams if their are no re-matches?
    66
  •  15
  • Divide 70 in a 5:2 ratio.
    50 and 20
  •  15
  • What is the midpoint of A(3;4) and B(9;12)
    (6;8)
  •  5
  • Give the vector connecting O(5,6) and Q(10;17).
    (5;11)
  •  5
  • What is the slope of 6x+3y=12
    -2
  •  5