The expression 8 x 1,000 + 4 x 100 + 7 x + 3 x 1/1,000 shows a number written in expanded form. Use the expression to
write the number in decimal form. Write your answer in the
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49xy +34y - 72z. determine the degree of the polynomial

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?