NC Math 4 Final Exam

Front

Solve for the value of x: 2x + 3 = 13.

Back

x = 5.0

Front

Find the length of side AC in triangle ABC where AB = 10, BC = 14, and angle A = 60 degrees.

Back

AC = 12.

Front

You can multiply a 2X3 matrix by which matrix?

Back

A 3X12 matrix.

Front

Convert the logarithmic equation ln(x) = 4 to its exponential form.

Back

x = e^4.

Front

Find the product of matrices B and A if B = [[1, 2], [3, 4]] and A = [[5, 6], [7, 8]].

Back

B x A = [[19, 22], [43, 50]].

Front

What is the definition of a matrix?

Back

A matrix is a rectangular array of numbers arranged in rows and columns.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a^2 + b^2 = c^2, where c is the hypotenuse.

Front

What is the definition of a logarithm?

Back

A logarithm is the exponent to which a base must be raised to produce a given number.

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / (2a).