To derive the standard formula of a circle, a radius r is constructed as the hypotenuse of a right triangle as shown. On a coordinate plane, a circle has center D at point (h, k). Right triangle D F E has point E on the circle. Point E is at (x, y). The length of D E is r. Angle E F D is a right angle.

What are the lengths of the sides of the right triangle that is formed? Check all that apply.

h
k
h – k
x – h
x – y
y – h
y – k

According to the data set, where should the upper quartile line of the box plot be placed?

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?

Astore ordered 750 candles a total wholesale cost of $7910.20. the soy candles cosy $12.17 each and thespecialty candles cost $9.58each. how many of each were bought?