Betty rearranged the movies on her shelving unit after a few days. She placed equal numbers of movies on the bottom 3 shelves and 10 movies on each of the top two shelves. If x is the number of movies on each of the bottom 3 shelves, the expression for the total number of movies on the shelving unit is 3x + 20. How many movies are on the shelving unit if there are 11 movies on each of the bottom 3 shelves?

hi, i am not sure about this one but i think its d,

hope this !

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)