Calculate the answer. Express It in scientific notation. All answers should have the correct number of significant figures. (4.9 x 102) (9.80 x 102) =
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If the dimensions of a rectangular prism are 5 ft x 3.5 ft x 2 ſt, what is the surface area?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?