Tan^2 x+sec^2 x=1 for all values of x. true or false

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?