The fourth term in an arithmetic sequence is 18 and the seventh term is 39. If the first term is a1 , which is an equation for the nth term of this sequence?

Me ! write an equation for the interior angles of this triangle that uses the triangle sum theorem

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)