Use the law of cosines to find each missing angle. Round to the nearest tenth.

(Unit 8: Right Triangles & Trigonometry, Homework 8: Law of Cosines)

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.