A. prove that
tan inverse 1/3+tan inverse 1/7+tan inverse 1/8=π/4​

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

Use this graph to find the cost of 6 show tickets