Quadratic equations Questions and Answers

Use a graphing utility to approximate the real solutions if any of the given equation rounded to two decimal places All solutions lie between 10 and 10 2x 7 3x 2 What are the approximate real solutions Select the correct choice below and fill in any answer boxes within your choice OA X Round to two decimal places as needed Use a comma to separate answers as needed OB There are no solutions

5 Determine whether the function is even odd or neither f x 5x 4

The productivity of a country is represented by the function f x y 45x4 5 1 5 where x units of labour and y units of capital are used What are the marginal productivity of labour a marginal productivity of capital when 9 units of labour and 288 units of capital are used Marginal Productivity of Labour Marginal Productivity of Capital

Measures of the angles of a quadrilateral drawing of geometric sequences The measure of the highest angle is Equation 24 What is the measure of the largest angle of this quadrilateral

In Exercises 33 38 calculate g b and g b where g is the inverse of f in the given domain if indicated 34 f x 4x 2x 35 f x x 6x 36 f x x 6x b 2 for x 0 b 4 for x 6 b 4

Critique Reasoning Bailey simplified the rational expression x 2 2x 4 x 2 x 2 by dividing out the x 2 terms and then dividing out a factor of x 2 to get 2 as the s mplified form of the rational expression is Bailey correct Why or why not

Alewuya invests a total of 11 500 in two accounts paying 10 and 6 simple interest respectively How much was invested in each account if after one year the total interest was 850 00 A Enter an equation that uses the information as it is given that can be used to solve this problem Use a as your variable to represent the amount of money invested in the account paying 10 simple interest Equation B The answers are was invested at 10 and was invested at 6

In a quality check of a sample of plastic pipes the diameters of 16 pipes were measured and the results in mm were 30 279 30 082 31 172 30 903 30 03 30 971 31 207 29 832 30 888 29 986 29 971 30 215 29 647 31 625 30 196 30 189 Calculate the mean of these measurements in mm giving your answer correct to 2 decimal places mm to 2 d p The mean is

If a function is increasing on the intervals 5 5 and 11 17 and decreasing on the interval 15 111 determine the interval s on which gox 32x 7 is increasing The graph g x 31 2x 7 is increasing on interval Type your answer in interval notation

Charlie s Desserts made a batch of fresh scones with 4 5 of a pound of butter and 15 of a pound of sugar How much more butter than sugar was used Write your answer as a fraction or as a whole or mixed number

45 qt L

Suppose that 8500 is placed in an account that pays 11 interest compounded each year Assume that no withdrawals are made from the account

K Conver 45

f the opposit e a djacent ratio of an 11 degree angle is 1 5 what is the ratio for a 79 degree angle Explain by drawing diagram and using words

Tran had 40 00 saved for a new bike our weeks later he had saved 68 00 t what rate of change did Tran s savings grow