GED MATH TEST

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

Define the Pythagorean theorem.

Back

In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. (a² + b² = c²)

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you calculate the mean of a set of numbers?

Back

Mean = (sum of all values) / (number of values)

Front

What is the difference between a permutation and a combination?

Back

Permutation: arrangement of items where order matters. Combination: selection of items where order does not matter.

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / (2a) for the equation ax² + bx + c = 0.

Front

Define a function in mathematics.

Back

A relation that assigns exactly one output for each input.

Front

What is the difference between independent and dependent variables?

Back

Independent variable: the variable that is changed or controlled. Dependent variable: the variable that is measured or affected.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

How do you find the median of a data set?

Back

Arrange the numbers in order and find the middle value. If there is an even number of values, average the two middle values.