What is the value of x + y? I've tried to figure out how to solve this, but I'm not very good at it, any help would be amazing!!

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

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?