Substitution solve for x & y
-4x - 2y equals 14
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Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg
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When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical
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