For all of these answers, the equation used was (AB + CD)/2 = EF
1.12+24=36 36/2=18
2. 21 + 35 = 56 56/2 = 28
3. (7 + EF)/2 = 9
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
Answer:
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Step-by-step explanation:
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S refers to side so it’s 64 = 8x8
At most there could be 40 contest winners. If 30 go to publishers he’s left with 120. if each winner can get 3 pieces of work, divide how much artwork he has(120) by the minimum amount of artwork he sends to a winner(3), and you get 40. there could be less depending on if he sends 5 pieces, for example, as a bonus for random winners. The max amount of winners he can have is 40.