How do I find brackets on a scientific calculator?

Question #6

how to convert a decimal nimber to a redical? with and without calculator.

Is there any way I can get this written by hand? It's hard to read, but I'm attempting to grasp it.

Question 1(iii) with explanation and step

How do I set this up in a calculator to get 0.57e Thanks

Question #43 (ti 84 calculator steps please) NOTE: This problem has many steps. You are asked to enter intermediate values in the process. These answers will require a fixed number of decimal points. However, you MUST ALWAYS REMEMBER that you are not using the rounded numbers in your future calculations. The only exception to this is that you may use z-scores rounded to three decimal places (of course, you also may use the unrounded version as well).In a certain school district in a large metropolitan area, the SAT scores over that past five years are normally distributed with a mean of 1471. Furthermore, Q1Q1 is 1270.For a normal distribution, what is the z-score for the 25-th percentile?z = (Enter answer rounded to three decimal places.)Using this information, what is the standard deviation of this population of SAT scores?sigma = (Enter answer rounded to the nearest whole number.)For a normal distribution, what is the z-score for the 99-th percentile?z = (Enter answer rounded to…