3AB/10 ÷ 3B/4 HELP TO SOLVE

Answer soon(fast) 15 pts-brainliest? for right answer with small explination a restaurant catered a party for 40 people. a child’s dinner (c) cost $11 and an adult’s dinner (a) cost $20. the total cost of the dinner was $728. how many children and adults were at the party? use the table to guess and check.(i couldn't get the graph onto the question)                                8 children and 32 adults9 children and 31 adults10 children and 30 adults12 children and 28 adults

If point a= (10,4) and b= (2,19) what is the length of ab 17 units 15 units 23 units 12 units

What is 2/3 - 1/3[tex] \frac{2}{3 } - \frac{1}{3} [/tex]