Same will take four science tests this quarter. Her scores on three of the tests are 83%, 91%, 88%. What does Sam need to score on the fourth test to ensure that she will have an average of 90% for all four tests?

Write the following as a base and exponent

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Find the multiplicative inverse of 8-12i