A vat with 800 gallons of beer contains 4% alcohol (by volume). Beer with 6% alcohol is pumped into the vat at a rate of 8 gal/min and the mixture is pumped out at the same rate. What is the percentage of alcohol after an hour

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

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What is the measure of angle 1? a.28 b.152 c.168 d.64