A bag has 4 red, 6 blue, and 3 green marbles. What is the probability of choosing a red marble?
Correct answer(s):
- 4/13
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A bag has 5 red, 8 blue, and 4 green marbles. What is the probability of choosing a red marble?
Correct answer(s):
- 5/17
Expand and simplify: (x + 6)².
Correct answer(s):
- x² + 12x + 36
Solve for x: 12x – 4 = -64.
Correct answer(s):
- -5
Factorize: x² – 121.
Correct answer(s):
- (x + 11)(x - 11)
The sequence is 4, 1, -2, -5, … . What is the 15th term?
Correct answer(s):
- -38
Solve for x: 10x – 9 = 31.
Correct answer(s):
- 4
Factorize: x² – 9.
Correct answer(s):
- (x + 3)(x - 3)
A student can choose from 5 shirts, 4 pants, and 1 pairs of shoes. How many different outfits are possible?
Correct answer(s):
- 20
Find the slope of the line passing through (-1, 4) and (1, 1).
Correct answer(s):
- -3/2
Solve the inequality: 3x + 4 ≤ -2.
Correct answer(s):
- x ≤ -2
Find the mode of the data set: 9, 10, 14, 24, 39, 39.
Correct answer(s):
- 39
Find the median of the data set: 8, 14, 29, 30, 32.
Correct answer(s):
- 29
Simplify using exponent laws: 10^5 × 10^2.
Correct answer(s):
- 10^7
Simplify using exponent laws: (10^2)^3.
Correct answer(s):
- 10^6
Simplify √52 as much as possible.
Correct answer(s):
- 2√13
Factorize: x² – 100.
Correct answer(s):
- (x + 10)(x - 10)
Find the mean of the data set: 5, 26, 37, 38, 39.
Correct answer(s):
- 29
The probability that it rains tomorrow is 1/4. What is the probability that it does not rain?
Correct answer(s):
- 3/4
If f(x) = -3x – 8, find f(8).
Correct answer(s):
- -32