Subject

Mathematics

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Quizzes in Mathematics

Solve the system: 3x + 1y = 8 and 3x – 2y = 11.

  • x = -1, y = 3
  • x = 8, y = 11
  • x = 4, y = -2
  • x = -3, y = 1
  • x = 3, y = -1
Correct answer(s):
  • x = 3, y = -1

Solve the system: 2x + 3y = 17 and 2x – 3y = 11.

  • x = 8, y = 0
  • x = 1, y = 7
  • x = 17, y = 11
  • x = -7, y = -1
  • x = 7, y = 1
Correct answer(s):
  • x = 7, y = 1

Add the matrices [[-2, 0], [-4, 5]] and [[-1, 3], [1, 4]].

  • [[2, 0], [-4, 20]]
  • [[-3, -3], [3, 9]]
  • [[-3, 3], [-3, 9]]
  • [[-1, -3], [-5, 1]]
Correct answer(s):
  • [[-3, 3], [-3, 9]]

If U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and A = {3, 7, 9, 10, 11}, what is A′?

  • {}
  • {1, 2, 4, 5, 6, 8, 12}
  • {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
  • {3, 7, 9, 10, 11}
Correct answer(s):
  • {1, 2, 4, 5, 6, 8, 12}

A fair 5-section spinner and a fair 5-section spinner are spun once. What is the probability of getting one chosen section on each spinner?

  • 2/25
  • 5/25
  • 1/25
  • 5/5
  • 1/10
Correct answer(s):
  • 1/25

In a class of 36 students, 17 study only Algebra, 9 study only Geometry, and 6 study both. How many study Algebra or Geometry?

  • 26
  • 6
  • 32
  • 36
  • 38
Correct answer(s):
  • 32