A triangle has side lengths of (2.4c - 6.8d) centimeters, (9.4c - 3.6f) centimeters, and (3.2f + 3.4d) centimeters. Which expression represents the
perimeter, in centimeters, of the triangle?

Solve: 3x+y=6 4x-2y=18 show all work !

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next

Luigi is the first person to finish a 5k race and is standing 13 feet beyond the finish line. another runner, mario, is still running the race and has approximately 24 feet before he reaches the finish line. what is the distance between mario and luigi? explain through words, numbers or pictures how you found the answer.