Find the difference: (5.21 x 10-) - (6.15 x 10-5)
Write your answer in scientific notation.
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Find an equation of the line perpendicular to the graph.

In the triangles, tr = ge and sr = fe. if = 3.2 ft, which is a possible measure of ? 1.6 ft 3.0 ft 3.2 ft 4.0 ft

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared