Use algebra tiles to model and solve each question.2x+5=11

The total number of dental clinics total for the last 12 months was recorded

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

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”?