Given that i2= –1, what is the value of (4 + 2i)(4 – 2i)?
(A) 12
(B) 20
(C) 16 – 4i
(D) 4 + 16i
(E) 12 – 16i
All of the following statements about rational and/or irrational numbers must be true EXCEPT:
(F) the sum of any two rational numbers is rational. (G) the product of any two rational numbers is rational. (H) the sum of any two irrational numbers is irrational. (J) the product of a rational and an irrational number may be rational or irrational. (K) the product of any two irrational numbers is irrational.
Correct Answer: K
If G is in the interior of right angle 
DEF, then which of the following could be the measure of GEF?
(A) 85° (B) 95° (C) 105° (D) 115° (E) 125°
Correct Answer: A
In the figure below, line m is parallel to line n. One angle formed with transversal line T measures 60°, as shown. What is the degree measure of 
a?
（A）30° （B） 60° （C） 90° （D） 120° （E） Cannot be determined
Correct Answer: D
More ACT Math Exam Questions
- 1
The coordinates of the vertices of
MON are shown in the standard (x,y) coordinate plane below. Rectangle MPQR is shown shaded. Point P lies on 
, point Q lies on 
, and point R lies on 
.
What is the slope of
MON? - 2In
ABC, the measures of 
A, B, and C are 2x°, 3x°, and 5x°, respectively. What is the measure of C? - 3Given that E = ABCD, which of the following is an expression of B in terms of E, A, C, and D?
- 4
If a = 5 and b = -
, which of the following expressions will be the greatest? - 5
Which of the following represents the product of the matrices below?
