What is the area of this trapezoid?

What other information do you need to prove triangle dac=bca by asa

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

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”?