What is the value of x? round to the nearest tenth.

What is the perimeter of square abcd? units units 28 units 37 units

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?