51. For all real numbers and such B. b c that the product of and 3 is C. c b, which of the following expressions D. represents the sum of and 3 in E. c terms of ? b A. 55. The lengths of the corresponding B. of two similar right triangles are C. in the ratio of 2:5. If the hypotenuse D. of the smaller triangle is 5 inches E. long, how many inches long is the hypotenuse of the larger triangle? 52. In any parallelogram it is A. 2 ABCD, always true that the measures of and B. 2.5 : C. 7 A. add up to 180º D. 10 B. add up to 90º E. 12.5 C. are each greater than 90º D. are each 90º 56. To increase the mean of 4 numbers E. are each less than 90º by 2, by how much the sum of the 4 numbers have to increase? 53. In the figure below measures 30º, A. 2 measures 110º, and points and B. 4 B, C, are collinear. What is the measure C. 6 D of ? D. 8 E. 16 57. Which of the following figures in a plane separates it into half-planes? A. A line B. A ray C. An angle D. A point A. 150º E. A line segment B. 140º C. 130º D. 120º E. 110º 58. Which of the following expressions has a positive value for all and x y such that and ? A. B. 54. When , which of the following expressions is equivalent to ? C. D. A.
51. For all real numbers b and c such that the product of c and 3 is b, which of the following expressions represents the sum of c and 3 in terms of b ? A. B. C. D. E. 52. In any parallelogram ABCD, it is always true that the measures of and : A. add up to 180º B. add up to 90º C. are each greater than 90º D. are each 90º E. are each less than 90º 53. In the figure below measures 30º, measures 110º, and points B, C, and D are collinear. What is the measure of ? A. 150º B. 140º C. 130º D. 120º E. 110º 54. When , which of the following expressions is equivalent to ? A. B. C. D. E. 55. The lengths of the corresponding of two similar right triangles are in the ratio of 2:5. If the hypotenuse of the smaller triangle is 5 inches long, how many inches long is the hypotenuse of the larger triangle? A. 2 B. 2.5 C. 7 D. 10 E. 12.5 56. To increase the mean of 4 numbers by 2, by how much the sum of the 4 numbers have to increase? A. 2 B. 4 C. 6 D. 8 E. 16 57. Which of the following figures in a plane separates it into half-planes? A. A line B. A ray C. An angle D. A point E. A line segment 58. Which of the following expressions has a positive value for all x and y such that and ? A. B. C. D.
___act_1_pre-test_0816101.docx