The ACT is a standardized test designed to measure your critical thinking skills and to assess your ability to apply knowledge and logic when solving problems. Every year, more than 2 million students take the ACT in order to get admissions to the colleges in the United States. The ACT test is divided into four multiple choice subject tests: English, Mathematics, Reading, and Science.
May 13, 2021
The probability distribution of the discrete random variable X is shown in the table below. What is the expected value of X ?
May 11, 2021
The lengths of the triangle shown below are rounded to the nearest 0.1 cm. What is the area, to the nearest 1 cm2, of this triangle?
(Note: The area of any triangle with sides of length a, b, and c opposite angles of measure A, B, and C, respectively, is given by 1/2 ab sin C.)
May 09, 2021
In the circle with center D shown below, the length of radius CD is 4 cm, the length of BC is 1 cm, and BC is perpendicular to radius AD at B. When ∠ADC is measured in degrees, which of the following expressions represents the length, in centimeters, of arc AC ?
Read more ...May 07, 2021
A finite arithmetic sequence has 7 terms, and the first term is 3/4. What is the difference between the mean and the median of the 7 terms?
May 05, 2021
Whenever j and k are positive integers such that (√3)j = 27k, what is the value of j/k?
F. 1/6
G. 3/2
H. 3
J. 4
K. 6
May 03, 2021
Mario was riding a bicycle with wheels 26 inches in diameter. During 1 minute of Mario's ride, the wheels made exactly 200 revolutions. At what average speed, in feet per second, was Mario riding during that minute?
May 01, 2021
The 3 parabolas graphed in the standard (x,y) coordinate plane below are from a family of parabolas. A general equation that defines this family of parabolas contains the variable n in addition to x and y. For one of the parabolas shown, n = 1; for another, n = 2; and for the third, n = 3. Which of the following could be a general equation that defines this family of parabolas for all n ≥ 1 ?
April 29, 2021
Four matrices are given below.
Which of the following matrix products is undefined?
April 27, 2021
For all nonzero values of x, (12x6 - 9x2)/3x2 = ?
April 25, 2021
Diana is baking bread, and the original recipe calls for 1 1/2 teaspoons of yeast and 2 1/2 cups of flour. Diana will use the entire contents of a packet that contains 2 1/4 teaspoons of yeast and will use the same ratio of ingredients called for in the original recipe. How many cups of flour will Diana use?
April 23, 2021
From the first cases of COVID-19 emerging in early February 2020 to the wave of school closings across the country in mid-March, the effects of the pandemic have been felt across the United States. Within a matter of weeks, schools closed and instruction moved into other formats.
Read more ...April 21, 2021
The table below shows the results of a survey of 250 people who were asked whether they like to read and whether they play a musical instrument.
According to the results, what is the probability that a randomly selected person who was surveyed likes to read, given that the person plays a musical instrument?