An engine and a train weight 200 metric tons and the engine can exert a pull of 5 metric tons weight . find the tension in the coupling if the engine alone weights 60. metric tones, The resistance being equal to 10 kg per tons

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.