The average age for the viewers of a certain TV show is 28 years old with a standard deviation of 4. What is the z-score of a viewer who is 21 years old? Please hurry

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Select the correct answer what is the most direct use of a compass in geometric constructions? a. to draw congruent angles b. to draw arcs of a given size c. to draw perpendicular lines d. to draw straight lines reset next next