NC Math 4 Final Exam

Front

log (a * b) = ?

Back

log a + log b

Front

Simplify the expression: 3i(4 -i) + i(6 +2i)

Back

1 + 18i

Front

Find the length of side AC.

Back

14

Front

A circle has a radius of 1 inch. What is the measure in degrees of a central angle measuring 2π/3 radians?

Back

120

Front

If f(x) = -1.5x - 1, give a coordinate point on the graph of f corresponding to f(-2)

Back

(-2, 2)

Front

Definition of logarithm: What is a logarithm?

Back

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

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius.

Front

What is the quadratic formula?

Back

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

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is the definition of a complex number?

Back

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.