In the following figure, each of the four angles in the parallelogram is as shown. What is the value of y?
(F) 30
(G) 35
(H) 40
(J) 45
(K) 50
In rectangle ABCD shown below, E is the midpoint of 
, and F is the midpoint of 
. Which of the following is the ratio of the area of quadrilateral AECF to the area of the entire rectangle?
（A）1:01 （B） 1:02 （C） 1:03 （D） 1:04 （E） 2:05
Correct Answer: B
In the following figure, the area of the large square is 81. What is the area of the shaded square?
(F) 45(G) 
(H) 
(J) 
(K) 
Correct Answer: F
The amplitude of the trigonometric function shown below is defined as the average of the absolute values of the maximum value of f(x) and the minimum value of f(x). The trigonometric function graphed below can be described by the equation f(x) = a sin(bx + c), where a, b, and c are real numbers. Which of the following values describes the amplitude of this function?
(A) 1 (B) 2 (C) 3 (D) π (E) 2π
Correct Answer: C
More ACT Math Exam Questions
- 1
The table below lists the number (to the nearest 1,000) of book club members in the United States for 2001 through 2004. Of the following expressions with x representing the number of years after 2001, which best models the number of book club members (in thousands) in the United States?
