If the expression (2x^{3})^{2}\ (-5x^{4})(2x 3
)
2
(−5x
4
) was placed in the exponential form ax​b , where a and b are numbers, then what is the value of a+b? Show your Work

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?