Respuesta :
For all of these answers, the equation used was (AB + CD)/2 = EF
1.12+24=36Â Â 36/2=18
2. 21 + 35 = 56Â Â 56/2 = 28
3. (7 + EF)/2 = 9Â
  multiply by 2
  7 + EF = 18
  subtract 7
EF = 11
4. (AB + 32)/2 = 22
Multiply by 2
AB + 32 = 44
Subract 32
AB = 12
5. Average
1.12+24=36Â Â 36/2=18
2. 21 + 35 = 56Â Â 56/2 = 28
3. (7 + EF)/2 = 9Â
  multiply by 2
  7 + EF = 18
  subtract 7
EF = 11
4. (AB + 32)/2 = 22
Multiply by 2
AB + 32 = 44
Subract 32
AB = 12
5. Average