To find 19+(11+37)lennon added 19 and 11 then he added 37 to the sum what property did he use?

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Which of the following circles have their centers in the third quadrant? check all that apply.