Question 19 Given the following matrix operations, answer the questions below. Not yet answered Marked out of 16 1:00 0 Flag question -in added to 10 a -2r added to 10 N Is the solution matrix in REF, RREF. or Neither? RREF Neither What is the solution for this system? REFJestion 23 ot yet answered arked out of 1.00 Flag question Convert the following complex number to polar form: 1+i Select one: O a. V2+0 O b. V2i(cos( " ) + sin()) O c. 2(cos(" ) + isin(" )) O d. V2(cos(# ) + isin("))25 Match the appropriate value for the denominators of 2 and y' when the following equation for an ellipse is re-written in standard form. 4x2 + y2 - 64 - 0 Time left 2:33:16 out of Denominator for y2 64 Denominator for 12 16 26 When graphing a parabola, the focus is defined as a located the parabola, and the directrix is defined as a ocated the parabola. They are both units away from the vertex. out of 27 Eliminate the parameter from the parametric equations below, and convert the equation into rectangular form. F(t) = (1(t), y(t)) out of given x(t) = t, y(t) = = Select one: O a. y = = O bey= = O cy= = O d. y = 312