In the system –12c + 3d = 6 and –3c + 6d = –9, which expression could you use for substitution? a. d = –1/2c – 3/2 b. c=-2d+3 c. c = 1/4d – 1/2 d. d = 4c – 2

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?