When solving for the temperature on a ski mountain you get a solution which indicates that the temperature is -30 degrees Fahrenheit. In complete sentences explain whether or not this is an extraneous solution.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.