Which expression has the same sum as the one below?
-15+6
Su
15+6
-6+(-15)
15+(-6)
6+(-15)

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Find percent notation for 0.008 0.008=

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml