Zapisz jako wyrażenie algebraiczne różnicę, w której odjemną jest kwadrat liczby a ,a odjemnikiem połowa liczby b. oblicz wartość tego wyrażenia dla a=5 i b =18 proszę szybko na !

What is x and y (use substitution? ) 5x+3y=38 and y=3x+8?

How do you divide 9/4 divided by 10/3

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