As expressões -(1/3)² e (-1/3)² são, respectivamente, iguais a: a) 1/9 e -1/9
b) -1/9 e -1/9
c) -1/9 e 1/9
d) 1/9 e 1/9

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

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