What do you think would happen to the energy bill at your school if all of the light bulbs were changed from incandescent to fluorescent bulbs?

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

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answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;