April claims that 1 + cos2(theta) / sin2(theta)= 1 / sin2(theta) is an identity for all real numbers thetatheta that follows from the pythagorean identity
a. for which values of thetatheta are the two functions ) = 1 + cos2(theta) / sin2(theta)and ) = 1 / sin2(theta)defined?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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?

Rob filled 5 fewer plastic boxes with football cards than basketball cards. he filled 11 boxes with basketball cards.