Alvin drives 12 km due south from town a to town b, and then drives 72 km due east to town c. finally, he 12 km drives 18 km due south to town d. find the distance between town a and town d.
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Ineed with number 17 i don’t get it at alll

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.

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle