Find the range of the data set: 14, 17, 22, 26, 28.
Correct answer(s):
- 14
Subject
Advanced Mathematics
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Quizzes in Advanced Mathematics for Grade 8
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)
Factorize: x² + 13x + 42.
Correct answer(s):
- (x + 7)(x + 6)
Write 68000 in scientific notation.
Correct answer(s):
- 6.8 × 10^4
Which expressions are polynomials in x?
Correct answer(s):
- 9
- x³ − x
- 5x − 7
- x² + 3x + 1
Which probabilities are impossible for an event?
Correct answer(s):
- −0.2
- 1.3
Solve the system: 1x + 2y = 9 and 2x – 3y = -31.
Correct answer(s):
- x = -5, y = 7
Find the slope of the line passing through (-2, -6) and (-5, -1).
Correct answer(s):
- -5/3
Find the slope of the line passing through (-4, -6) and (-7, -1).
Correct answer(s):
- -5/3
Solve the system: 2x + 3y = 10 and 2x – 1y = -6.
Correct answer(s):
- x = -1, y = 4
Find the mean of the data set: 4, 9, 18, 28, 32.
Correct answer(s):
- 91/5
If f(x) = 6x + 6, find f(-4).
Correct answer(s):
- -18
Factorize: x² + 14x + 45.
Correct answer(s):
- (x + 9)(x + 5)
Find the mode of the data set: 6, 21, 25, 25, 26, 31.
Correct answer(s):
- 25
Find the slope of the line passing through (3, 5) and (7, 7).
Correct answer(s):
- 1/2