19 have an average body mass of 50.2 kg a new student join the group. if one body mass of the new students is 44.2 KG calculate the average body mass of the students​

Need some ! asap i need to figure out 3 major changes in bridges over time and why these changes to adapt to both improvements in technology and changing social links would also alot.

Identify the expression 8 + 8 + 8 + 8 as a numerical expression or a variable expression. for a variable expression, name the variable.

Like many art movements, pop art was created as