Which equation is not an identity? a.) tan(-t) = -tan t b.) tan t(csc t + cot t) = sec t + 1 c.) sin tcot t = cos t d.) cos^2t - sin^2t = -1

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.