- What is the tan^2(-30) in whole numbers?

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Could someone please help me find the LCD of this rational expression as well as the solution? 4/(x+1)+1/x=15/(2x)? Can any one graph y=-2x+4 using x and y intercept? Find the indicated limit, if it exists. lim f(x), x approaches 9 {x+9 , x < 9} { 27-x , x>9}? Reduce power to the 1st powers of sin(nx) and cos (mx): cos^4 (x) =? Seth earns $152 in four days. how many days will it take him to earn $532?