A large negative number is added to a small positive number which of the following statements is correct about the sum

Which statement is not always true for a parallelogram? (a) opposite sides are congruent. (b) diagonals bisect each other. (c) it has 4 congruent angles. (d) consecutive angles are supplementary.

How many solutions does the nonlinear system of equations graphed bellow have?

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