The circular opening of a tunnel has a circumference of 49 meters. Find d, the diameter of the tunnel opening in meters. answer choices:

307.72 meters

7.8 meters

15.6 meters

153.86 meters

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What can each term of the equation be multiplied by to eliminate the fractions before solving? x – + 2x = + x 2 6 10 12

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

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.