On what types of triangles can we use the trig ratios?

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

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1