What are the roots of the equation x^2+16x+89=0x 2 +16x+89=0 in simplest a+bia+bi form?

Can someone me with the property questions for 12 13 and 14 plz

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.