Solve the system: 2x + 3y = -2 and 1x – 1y = 9.
Correct answer(s):
- x = 5, y = -4
Subject
Advanced Mathematics
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Quizzes in Advanced Mathematics for Grade 8
Find the median of the data set: 17, 21, 27, 36, 38.
Correct answer(s):
- 27
Find the slope of the line passing through (4, 0) and (2, 4).
Correct answer(s):
- -2
If f(x) = 6x + 7, find f(8).
Correct answer(s):
- 55
If f(x) = -2x + 3, find f(3).
Correct answer(s):
- -3
Write 9.1e+08 in scientific notation.
Correct answer(s):
- 9.1 × 10^8
Factorize: x² + 12x + 35.
Correct answer(s):
- (x + 7)(x + 5)
Find the slope of the line passing through (-6, -6) and (-4, -1).
Correct answer(s):
- 5/2
Solve for x: 3x + 14 = 47.
Correct answer(s):
- 11
Find the mean of the data set: 4, 5, 22, 27, 35.
Correct answer(s):
- 93/5
Solve for x: 5x – 9 = 1.
Correct answer(s):
- 2
The sequence is -6, -3, 0, 3, … . What is the 12th term?
Correct answer(s):
- 27
Find the range of the data set: 14, 17, 22, 26, 28.
Correct answer(s):
- 14
Find the slope of the line passing through (4, 3) and (0, 0).
Correct answer(s):
- 3/4
Solve for x: 2(x + 7) – 7 = 7.
Correct answer(s):
- 0
Multiply the matrix [[5, 1], [0, -5]] by -2.
Correct answer(s):
- [[-10, -2], [0, 10]]
Find the slope of the line passing through (1, 0) and (-1, 5).
Correct answer(s):
- -5/2
If U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and A = {3, 4, 7, 8, 9}, what is A′?
Correct answer(s):
- {1, 2, 5, 6, 10, 11, 12}
Factorize completely: 30x + 50.
Correct answer(s):
- 5(6x + 10)
In a class of 45 students, 10 study only Algebra, 15 study only Geometry, and 12 study both. How many study Algebra or Geometry?
Correct answer(s):
- 37