Nathan has three pieces of wood. the first is 9.8 feet in length, the second is 7.5 feet in length, and the third is 12 feet in length. he uses 5.2 feet from the first piece and 6.1 feet from the second piece and does not use the third piece of wood. how many feet of wood does nathan not use?

Which equation can be used to solve for the unknown number? seven less than a number is thirteen. n-7=13 7-n=13 n+7=13 n+13=7

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

Evaluate cos2θ for cosθ = square root of 3/2