Find the measure of an interior angle of a regular dodecagon(12-sided polygon). Hint: Sum = (n-2)180

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

17 in long 1.3 ft wide and 8in high what is the volume

Factor the expression using the gcf. the expression 21m−49n factored using the gcf