In circle O, PA and PB are tangents. The figure is not drawn to scale. a. Prove that triangle APO is congruent to BPO
b. Find angle BOD for angle AOP = 64. Explain your reasoning.

For each proportion find the unknown number x 1/5/8=×/15

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?

Which expression is the factorization of x^2+10+21