Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
18. ANSWER: 10-3 Operations with Radical Expressions Simplify each expression. 20. 2. ANSWER: ANSWER: 22. 4. ANSWER: ANSWER: 24. 6. ANSWER: ANSWER: 26. GEOMETRY Find the perimeter and area of a 8. and a length of rectangle with a width of ANSWER: . ANSWER: 2 10. units; 12 units ANSWER: 96 Simplify each expression. 28. 12. ANSWER: ANSWER: Simplify each expression. 14. 30. ANSWER: ANSWER: 16. 32. ANSWER: ANSWER: 18. ANSWER: 34. FINANCIAL LITERACY Tadi invests $225 in a savings account. In two years, Tadi has $232 in his account. You can use the formula eSolutions Manual - Powered by Cognero 20. ANSWER: to find the average annual interest rate r that the Page 1 account has earned. The initial investment is v0 and Sample answer: 32. simplify ANSWER: 10-3 Operations with Radical Expressions to find the average annual interest rate r that the account has earned. The initial investment is v0 and . When you simplify ANSWER: about 1.5% 36. CHALLENGE Determine whether the following statement is true or false . Provide a proof or counterexample to support your answer. when x > 0 and y > 0 ANSWER: True; have 40. SHORT RESPONSE The population of a town is 13,000 and is increasing by about 250 people per year. This can be represented by the equation p = 13,000 + 250y, where y is the number of years from now and p represents the population. In how many years will the population of the town be 14,500? ANSWER: 6 years v2 is the amount in two years. What was the average annual interest rate that Tadi’s account earned? x +y > , you get , you get . Because and the same radicand, you can add them. 34. FINANCIAL LITERACY Tadi invests $225 in a savings account. In two years, Tadi has $232 in his account. You can use the formula ; When you 42. Evaluate F 4; 4 G 4; 2 H 2; 4 J 2; 2 and for n = 25. ANSWER: G Simplify. 44. ANSWER: Because x > 0 and y > 0, 2xy > 0 is always true. So, is true for all x > 0 and y > 0. 38. OPEN ENDED Write an equation that shows a sum of two radicals with different radicands. Explain how you could combine these terms. 46. ANSWER: 48. ANSWER: ANSWER: Sample answer: simplify ; When you , you get . When you simplify , you get . Because and the same radicand, you can add them. 40. SHORT RESPONSE The population of a town is 13,000 and is increasing by about 250 people per year. This can be represented by the equation p = 13,000 + 250y, where y is the number of years from now and p represents the population. In how many years will the population of the town be 14,500? ANSWER: 6 years eSolutions Manual - Powered by Cognero 42. Evaluate and Graph each function. Compare to the parent graph. State the domain and range. have 50. ANSWER: stretched vertically; D = {x | x ≥ 0}, R = {y | y ≥ 0} Page 2 for n = 25. 48. ANSWER: 10-3 Operations with Radical Expressions Graph each function. Compare to the parent graph. State the domain and range. 54. ANSWER: translated up 3; D = {x|x ≥ 0}, R = {y|y ≥ 3} 50. ANSWER: stretched vertically; D = {x | x ≥ 0}, R = {y | y ≥ 0} Factor each trinomial. 2 56. x + 12x + 27 ANSWER: (x + 3)(x + 9) 52. ANSWER: translated left 1; D = {x|x ≥ −1}, R = {y|y ≥ 0} 2 58. p − 17p + 72 ANSWER: (p − 8)(p − 9) 2 60. y − y − 42 ANSWER: (y − 7)(y + 6) 62. FINANCIAL LITERACY Determine the value of an investment if $400 is invested at an interest rate of 7.25% compounded quarterly for 7 years. ANSWER: $661.44 54. ANSWER: translated up 3; D = {x|x ≥ 0}, R = {y|y ≥ 3} Solve each equation. Round each solution to the nearest tenth, if necessary. 64. −2.6q − 33.7 = 84.1 ANSWER: −45.3 66. eSolutions Manual - Powered by Cognero ANSWER: −80 68. 3.6t + 6 − 2.5t = 8 Factor each trinomial. Page 3 nearest tenth, if necessary. 64. −2.6q − 33.7 = 84.1 ANSWER: 10-3 Operations with Radical Expressions −45.3 66. ANSWER: −80 68. 3.6t + 6 − 2.5t = 8 ANSWER: 1.8 eSolutions Manual - Powered by Cognero Page 4