Aconstruction worker is making concrete by mixing sand, gravel, and cement in water. for each pound of sand, he uses 1 2/3 pounds of gravel. for each pound of gravel, he uses 2/5 pound of cement. he is making enough concrete that he needs to use 3 pounds of sand. how many pounds of cement does he use? a. 1 pound b. 1 4/15 pounds c. 2 pounds d. 2 1/15 pounds

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

50 points and will mark brainlest if you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking:

Atravel agent is booking a trip to england, scotland, ireland, and france for a group of senior citizens. the agent sent surveys to the group, asking which countries they would like to visit, in order, and created the shown preference schedule (e = england, i = ireland, s = scotland, f = france). which country is the condorcet winner? number of votes 15 12 16 19 1st f e e i 2nd e s i s 3rd s i s e 4th i f f f 1. scotland 2. england 3. france 4.ireland