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Mathematics, 02.11.2019 03:31 destinypierre
If a variable cannot be removed during an experiment (such as rainfall variations on crop growth), how can researchers know if that variable is causing the observed effect or if the thing they are studying (such as fertilizer) is causing the effect?
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Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2
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Mathematics, 21.06.2019 23:40
Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.
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If a variable cannot be removed during an experiment (such as rainfall variations on crop growth), h...
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