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Math A Mania Review Activity Copyright © 2004 MathBits.com Algebra Using Formulas Geometry Statistics Patterns & Functions 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50 10 points Subtract 4x2 – 2y2 – 8 from 3x2 +2y2 +7. Return to Question Board See Answer 10 points A N S W E R: 2 2 -x +4y +15 Return to Question Board 20 points Find: (2x + 3)(x + 5) Return to Question Board See Answer 20 points A N S W E R: 2 2x + 13x + 15 Return to Question Board 30 points Find the product: x2(4x4 +2x2 +x) Return to Question Board See Answer 30 points A N S W E R: 6 4x + 4 2x + 3 x Return to Question Board 40 points 2 14a bc Reduce: 3 4 42ab c Return to Question Board See Answer 40 points A N S W E R: a 2 3 3b c Return to Question Board 50 points Simplify: 9x 2x 7 x 5 6 3 4 Return to Question Board See Answer 50 points A N S W E R: 23 x 13 12 Return to Question Board 10 points Find the slope of the line connecting (2,4) to (-4,-3). Return to Question Board See Answer 10 points A N S W E R: 7 1 1 6 6 Return to Question Board 20 points Find the sum of the exterior angles of a pentagon. Return to Question Board See Answer 20 points A N S W E R: 360º Return to Question Board 30 points Find the area of a trapezoid whose bases are 10 and 14 and whose height is 8. Return to Question Board See Answer 30 points A N S W E R: 96 sq. units Return to Question Board 40 points Write the equation of a circle whose center is at (-4,2) and whose radius is 3. Return to Question Board See Answer 40 points A N S W E R: 2 2 ( x 4) ( y 2) 9 Return to Question Board 50 points Find the area of a circle whose circumference is 18 . Return to Question Board See Answer 50 points A N S W E R: 81 Return to Question Board 10 points The perimeter of a square is 80 inches. What is the area of the square? Return to Question Board See Answer 10 points A N S W E R: 400 sq. inches Return to Question Board 20 points The ratio of the corresponding sides of two similar triangles is 4:5. What is the ratio of the corresponding areas? Return to Question Board See Answer 20 points A N S W E R: 16:25 Return to Question Board 30 points Find the distance between the points (-4,-5) and (1,-2). Return to Question Board See Answer 30 points A N S W E R: 34 Return to Question Board 40 points A baseball diamond is a square with sides of 90 feet. What is the shortest distance between first and third base? (Answer to nearest tenth of a foot.) Return to Question Board See Answer 40 points A N S W E R: 127.3 feet Return to Question Board 50 points In a cone, if the radius and the height are doubled, what happens to the volume of the cone? Return to Question Board See Answer 50 points A N S W E R: The volume is multiplied by 8. Return to Question Board 10 points What is the mean for the data set 24, 26, 28, 30,and 40? Return to Question Board See Answer 10 points A N S W E R: 29.6 Return to Question Board Math Test Scores 20 points (out of 50 pts) Stem Leaf 3 4 5 56 0225 000 According to this stem and leaf plot, how many test scores are in the 40’s? Return to Question Board See Answer 20 points A N S W E R: 4 Return to Question Board 30 points Ducky has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests? Return to Question Board See Answer 30 points A N S W E R: 95 Return to Question Board 40 points In the box and whisker plot shown, the median score is 80 and the 3rd quartile score is 90. Using the letters on the plot, indicate where the 80 and 90 located? Return to Question Board See Answer 40 points A N S W E R: The 80 is at C. The 90 is at D. Return to Question Board 69-76 (2) 77-84 (2) 85-92 (5) 93-100 (3) 50 points This table shows the scores received by 12 students on a quiz. Students who received at least an 85% got a sticker. What percent of the students received a sticker? Return to Question Board See Answer 50 points A N S W E R: 2 66 % 3 Return to Question Board 10 points Solve for c: 5c - 4 - 2c + 1 = 8c + 2 Return to Question Board See Answer 10 points A N S W E R: c = -1 Return to Question Board 20 points Solve: 2 - 5x > 3x - 14 Return to Question Board See Answer 20 points A N S W E R: x<2 Return to Question Board 30 points Write the equation of a line that is parallel to y = 4x + 6 and has a y-intercept of -5. Return to Question Board See Answer 30 points A N S W E R: y = 4x - 5 Return to Question Board 40 points What is the equation of the axis of symmetry of the graph y = 3x2 + 12x - 2 ? Return to Question Board See Answer 40 points A N S W E R: x = -2 Return to Question Board 50 points Explain why the graph of the straight line with slope of -2 and y-intercept of -3 passes through the point (5,-13). Return to Question Board See Answer 50 points A N S W E R: A line of slope -2 and y-intercept -3 has an equation of y = -2x – 3. Since the point (5,-13) works in this equation, the point is on the line. -13 = -2(5) – 3 (true) Return to Question Board