Subject

Mathematics

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Quizzes in Mathematics

Solve the system: 2x + 3y = 12 and 1x – 1y = -4.

  • x = 12, y = -4
  • x = 4, y = 0
  • x = 1, y = 3
  • x = 0, y = 4
  • x = 0, y = -4
Correct answer(s):
  • x = 0, y = 4

Add the matrices [[7, 5], [1, -3]] and [[5, 3], [5, 7]].

  • [[2, 2], [-4, -10]]
  • [[12, 8], [6, 4]]
  • [[12, 6], [8, 4]]
  • [[35, 15], [5, -21]]
Correct answer(s):
  • [[12, 8], [6, 4]]

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

  • x = 1, y = 5
  • x = 11, y = -3
  • x = -1, y = -5
  • x = 5, y = 1
  • x = 2, y = 4
Correct answer(s):
  • x = 1, y = 5

Factorize: x² – 121.

  • x(x – 11)
  • (x – 11)(x – 11)
  • (x + 11)(x – 11)
  • (x + 11)(x + 11)
  • (x + 121)(x – 1)
Correct answer(s):
  • (x + 11)(x - 11)

A bag has 5 red, 8 blue, and 4 green marbles. What is the probability of choosing a red marble?

  • 17/5
  • 4/17
  • 8/17
  • 5/17
  • 5/13
Correct answer(s):
  • 5/17

A bag has 4 red, 6 blue, and 3 green marbles. What is the probability of choosing a red marble?

  • 3/13
  • 4/10
  • 6/13
  • 4/13
  • 13/4
Correct answer(s):
  • 4/13