Line segment xy is tangent to circle z at point u. if the measure of uv is 84, what is the measure of yuv. a. 42 b. 84 c. 96 d. 168

Can you simplify 4/7? 24 points will be awarded!

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?

Me d is also an option but i couldn't get it in the picture