Choose the phrase that best describes the matrix.

| -1 -3 -1 |
| 9 -9 -1 |
| -1 -3 4 |
a) coefficient matrix. b) augmented matrix in row echelon form. c) augmented matrix. d) none of the above.

Which graph shows the solution set of x^2+4-12x/> 0

Jocelyn estimates that a piece of wood measures 5.5 cm. if it actually measures 5.62 cm, what is the percent error of jocelyn’s estimate? a. 2.13% b. 2.18% c. 12% d. 46.83%

Myra took a picture of the sky one afternoon when two jet airplanes appeared to draw a pair of parallel lines with their vapor trails. the vapor trails from two other jets flying from another direction crossed over the parallel trails. she printed her picture and labeled the angles and lines. assume lines c and d are parallel and 2 measures 98°. which statements are true? check all that apply. 3 = 6 = 98° 3 = 14 = 98° 4 = 8 = 82° 4 = 12 = 82° 5 = 8 = 82°