Two whole numbers have a greatest common factor of 8 and a least common multiple of 48. Which of the following pairs of whole numbers will satisfy the given conditions?
(A)4 and 9
(B) 5 and 10
(C) 10 and 16
(D) 14 and 20
(E) 16 and 24
RST is a right triangle with side lengths of r, s, and t, as shown below. What is the value of cos2 S + cos2 R?
(F) 1 (G) (H) (J) (K)
Correct Answer: F
A rectangular piece of cloth has a length of 6 feet and a width of 1.5 feet. Brad estimates that the area is 12 square feet. His estimate is approximately what percent greater than the actual area?
(F) 75% (G) 66% (H) 33% (J) 25% (K) 17%
Correct Answer: H
If |6-2x| > 9, which of the following is a possible value of x?
（A）-2 （B） -1 （C） 0 （D） 4 （E） 7
Correct Answer: A
More ACT Math Exam Questions
- 1Δ ABC is similar to Δ XYZ. AB is 5 inches long, BC is 8 inches long, and AC is 3 inches long. If the longest side of Δ XYZ is 20 inches long, what is the perimeter, in inches, of Δ XYZ ?
Consider the exponential equation y = , where K and p are positive real constants and x is a positive real number. The value of y decreases as the value of x increases if and only if which of the following statements about p is true?
- 3In an isosceles right triangle, the hypotenuse is 12. What is the length of one (1) of the sides?
In the following figure, the large quadrilateral is a square. What is the area of the shaded region in terms of x and y?
In the standard (x,y) coordinate plane below, 3 of the vertices of a rectangle are shown. Which of the following is the 4th vertex of the rectangle?