Solve √(x + 2) = 9.
Correct answer(s):
- 79
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Solve √(x + 3) = 9.
Correct answer(s):
- 78
Solve √(x + -2) = 2.
Correct answer(s):
- 6
Solve √(x + 3) = 9.
Correct answer(s):
- 78
Solve √(x + 3) = 2.
Correct answer(s):
- 1
Solve √(x + -4) = 3.
Correct answer(s):
- 13
Solve the inequality: 7x – 10 < -38.
Correct answer(s):
- x < -4
Factor the greatest common factor from 10x + 16.
Correct answer(s):
- 2(5x + 8)
Simplify: (-8x – 3y + 10) + (-6x – 2y + 5).
Correct answer(s):
- -14x - 5y + 15
Solve for x: 2x + 5/3 = -7/3.
Correct answer(s):
- -2
A student says x^2 + x^3 = x^5. What is the mistake?
Correct answer(s):
- Unlike powers were added as if multiplying
Solve for x: 3(x + 3) – 6 = 24.
Correct answer(s):
- 7
y varies directly as x. If y = 10 when x = 5, what is the constant of variation?
Correct answer(s):
- 2
Select all numbers that satisfy x < 5.
Correct answer(s):
- 3
- 4
What type of equation is 3(x – 3) = 3x – 9?
Correct answer(s):
- Identity: true for every value of x
The length of a rectangle is 5 cm more than its width. If the perimeter is 54 cm, what is the width?
Correct answer(s):
- 11 cm
A quantity decreases by 20% and becomes 192. What was the original quantity?
Correct answer(s):
- 240
Factor: x^2 – 9.
Correct answer(s):
- (x - 3)(x + 3)
Simplify: x^0, where x ≠ 0.
Correct answer(s):
- 1
Solve the system: x + 2y = 7 and -x + 2y = 1.
Correct answer(s):
- (3, 2)