Solve using Gaussion Elimination Method
2x+5y=1
x-3y+2z=1
-x+2y+z=7

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Find cot x if sin x cot x csc x = √2

Which of the following scenarios demonstrates an exponential decay