Calcula el perímetro de una circunferencia cuyo radio es r=7.3 (utiliza 3 decimales). Utiliza a pi=3.14 y escribe la respuesta con 3 decimales.

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Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2