A radical equation is being solved below but has missing work. Fill in the missing steps in red. To help, look at each line and compare it to the steps in the previous line to see what changed or what calculations were made to get to the next step. (3 points)

Check for Extraneous Solutions. (2 points)

Which shows the pre image of triangle xyz

What is sin 7x/4 ? i need on this urgent trig

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.