In the diagram, a building casts a 21-ft shadow and a flagpole casts a 6-ft shadow. if the flagpole is 15 ft tall, how high is the building? round to the nearest tenth.

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

What is the answer to |-2x-5|-|-4+8| and x=7

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