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Praxis I Math

Subjects : praxis, math
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The y value of the vertex of parabola is the equation






2. What is the volume of a sphere with a radius r






3. A triangle with one obtuse angle (angle greater than 90 degrees) is






4. In a quadratic formula if the a value of the parabola is less than 0 the parabola opens ___________






5. What is the area of a pyramid or cone (hint B= area of Base)






6. The sum of the interior angles of a triangle = ___________






7. In the law of proportion if a/b = c/d then b/a =






8. What type of trapezoid has its non parallel sides equal






9. The _______says for every reals number a - for every real number b and for every real number c - a(b+c) = ab + ac






10. A __________of a circle is a line segment drawn from the center of the circle to any point on the circle






11. Two distinct straight lines can intersect at most at only one point






12. When calculating the probability of mutually exclusive event y (can not occur simultaniously) you need to ______their seperate probabilities (uses the word 'or')






13. What is the formula for a combination (where order matters)






14. In a quadratic equation in 2 unknowns has the general formula ax^2 + bxy + cy^2+dx +ey+ f = 0 the graph is called an __________ (b^2-4ac greater then 0)






15. An angle whose measure is greater than 180 degrees and less than 360 degrees






16. Use ____________= 1/2a X p (where a = apothem and p = the perimeter)






17. The __________ of a regular polygon is the segment joining an vertex with the center of the polygon






18. If a triangle has two congruent sides then it is an _________triangle






19. In a function the x value is the ___________variable






20. The volume of a cube is






21. What is the closure property of addition - for every real number a - for every real number b ______________ is a real number






22. Every real number is a ______________






23. How do you calculate the area of a parallelogram - what is the formula






24. Two lines are said to be ______________ if they intersect and form right angles






25. The perimeter of two similar polygons have the same ratio as the measure of any pair of corresponding line segments of the polygon






26. That points of intersection on a triangle are called its _____________






27. The square of a real number cannot be ___________






28. How do you calculate the area of a trapezoid (hint h= altitude - perpendicular segment)






29. The __________property of additon says that fro every real number a - ther is a real number such that a + - a = - a+ a = 0






30. If all points lie in the same plane they are __________






31. An angle whose measure is 180 degrees






32. If a=0 in a quadratic formula - the quadratic is reduced to a linear function and a ____________






33. The __________of a triangle is a line segment from a vertex of the triangle perpendicular to the opposite side






34. What is the surface area of a sphere with a radius r






35. An angle whose measure is 90 degrees






36. A __________________ is a circle passing through all the vertices of a polygon






37. When proving 2 polygons are similar - what is the formula you use (hint: n= the number of sides)






38. When solving a system of equation involving quadratics and one is linear and the other is quadratic - solve the _______ first - then substitue the found value into the quadratic and solve for the other unknown






39. When calculating the probability of independent events you need to __________ (words like and &' followed by' )






40. Distance from a ___________ to a _________ is the measure of the perpendicular line segment from the point to that line






41. What is the formula for a square if you only know the length of the diaganol






42. A line that joins the midpoint of two sides of a triangle is called the__________






43. The __________property of multiplicaiton for every real numver a - for every real number b ab= ba






44. The ____________ says y - y1= m(x-x1)






45. i^2 = _____________






46. Log base b to the b = ____________






47. A ___________is a figure with the same number of sides as angles






48. To find the x intersept we need to make __________= 0






49. When you have a linear equation such as ax + by = c you may use ___________ or _____________ to solve the problem - (you may first have to multiply through one of the equation to make either the x or y value equal)






50. _____________ of angles is an equivalance relation - it is reflexive - symmetric and transitive