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Questions and Answers
What is the value of a in the expression a + a + a - a × a × a?
What is the value of a in the expression a + a + a - a × a × a?
- a
- a^2
- a^3
- 1 (correct)
What is the value of x in the equation -3 + 2x + σ = 3x × 2x - 12x ÷ 3 + 2?
What is the value of x in the equation -3 + 2x + σ = 3x × 2x - 12x ÷ 3 + 2?
- 0
- 2
- 3 (correct)
- 1
What is the value of cb - 3twt3xxx - 2 × 2 in the equation cb - 3twt3xxx - 2 × 2 = 3t20 - 2?
What is the value of cb - 3twt3xxx - 2 × 2 in the equation cb - 3twt3xxx - 2 × 2 = 3t20 - 2?
- t20
- 2t20 (correct)
- 20
- 3t20
What is the value of A when x = -3 and y = 5 in the equation A = 2x + 2t + 20?
What is the value of A when x = -3 and y = 5 in the equation A = 2x + 2t + 20?
What is the value of x in the equation 4xtbx - 2 = 3t20 - 2 × 2?
What is the value of x in the equation 4xtbx - 2 = 3t20 - 2 × 2?
What is the value of Gx in the equation Gx = 2 - 3twt3xxx - 2 × 2?
What is the value of Gx in the equation Gx = 2 - 3twt3xxx - 2 × 2?
What is the value of σ in the equation -3 + 2x + σ = 3x × 2x - 12x ÷ 3 + 2?
What is the value of σ in the equation -3 + 2x + σ = 3x × 2x - 12x ÷ 3 + 2?
What is the value of Δ in the equation a + a + a - a × a × a = Δ?
What is the value of Δ in the equation a + a + a - a × a × a = Δ?
What is the value of x in the equation x ≥ 1 - 2/zotbx?
What is the value of x in the equation x ≥ 1 - 2/zotbx?
What is the value of cb in the equation cb - 3twt3xxx - 2 × 2 = 3t20 - 2?
What is the value of cb in the equation cb - 3twt3xxx - 2 × 2 = 3t20 - 2?
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Study Notes
Solving Equations
- The equation 3[2 - (1 - x)] = x - 1 has a solution of x = -2.
- The equation x = -2(x + 6) has a solution of x = 2.
Simplifying Expressions
- The expression a + a + a - a × a × a simplifies to 2a.
- The expression -3 + 2x + σ simplifies to 2x - 3 + σ.
- The expression 3x × 2x - 12x ÷ 3 + 2 simplifies to 6x^2 - 4x + 2.
Inequalities
- The inequality 2x - 3t ≥ 20 has a solution of x ≥ (20 + 3t) / 2.
- The inequality z/(2x - 3) ≥ (2x + 1) has a solution of x ≥ (z + 6) / 4.
Values of Variables
- The value of A = x^2 + 2y when x = -3 and y = 5 is A = 9 + 50 = 59.
Statistics
- Among 150 MP3 files stored in a phone, the proportion of files is not specified.
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