A tv costs 800 plus vat at 20% what is the total cost of the tv

Find and simplify the difference of the golden ratio and its multiplicative inverse

Graph the equationy= x+3[tex]y = x + 3[/tex]

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”?