on the album ¨1989¨ by taylor swift blank space is 12 seconds longer than shake it off if the combined time of the two songs is 7 minutes and 30 seconds how long is shake it off give your answer in minutes and seconds

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

Complete the equation of the live through (-1,6) (7,-2)

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15