Find the volume of the triangular prism pictured below with a=10 cm , b=9 cm , and h=8 cm

Ihave trouble finding the nth term of a linear sequence

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

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”?