Basic Questions Flashcards
What is the quadratic formula?
The quadratic formula is x = (-b ± √(b² - 4ac)) / 2a.
What is the formula for the area of a circle?
The area of a circle is A = πr², where r is the radius.
Solve for x: 3x + 5 = 20.
x = 5.
What is the Pythagorean theorem?
The Pythagorean theorem is a² + b² = c², where a and b are the legs of a right triangle and c is the hypotenuse.
What is the sum of the interior angles of a triangle?
The sum of the interior angles of a triangle is always 180°.
Simplify: 4x + 7x.
11x.
What is the probability of rolling a 3 on a fair six-sided die?
The probability is 1/6.
Solve for x: 2(x - 3) = 14.
x = 10.
What is the area of a rectangle with length 5 cm and width 8 cm?
Area = 5 × 8 = 40 cm².
What is the volume of a cube with side length 4 cm?
Volume = 4³ = 64 cm³.
What is the gradient of the line with equation y = 2x + 5?
The gradient is 2.
What is the formula for the circumference of a circle?
The circumference of a circle is C = 2πr, where r is the radius.
Solve for x: 5x - 3 = 2x + 4.
x = 7/3.
What is the mean of the numbers 3, 5, 7, 9, 11?
Mean = (3 + 5 + 7 + 9 + 11) / 5 = 35 / 5 = 7.
What is the formula for the area of a triangle?
The area of a triangle is A = ½ × base × height.
