The width of a rectangle measures (2.9d-9.5f)(2.9d−9.5f) centimeters, and its length measures (4.4d-2.6f)(4.4d−2.6f) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.