A=bx+cx/2

please help

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?