If the average of four numbers is 4, and if the number 6 is added to these four numbers, what is the average of all five numbers?

单项选择题As production coordinator, Elizabeth was ------- for the supervision of the final stages of assembly and of overall product quality.

单项选择题Glacier Inc. is anticipating that its new line of climbing gear will improve its ------- in the outdoor sports gear market.

单项选择题Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?

单项选择题Solve the following equation for A : 2A 3 = 8 + 4A

单项选择题Suppose that, in each trial, either electrons or protons had been added to each sphere to produce its charge. In Trial 3, which of the 2 types of particles would have been added to Sphere X, and which of the 2 types of particles would have been added to Sphere Y ?

单项选择题Suppose that Sphere X had become unfastened from the floor of the vessel during Trials 1 and 7. During which of these trials would Sphere X more likely have undergone the lesser amount of acceleration?

单项选择题Based on the chemical equation in the passage, in a ZAB, as 5 02 molecules are consumed, how many Zn atoms, if any, must also be consumed?

单项选择题For a project in Home Economics class, Kirk is making a tablecloth for a circular table 3feet in diameter. The finished tablecloth needs to hang down5inches over the edge of the table all the way around.To finish the edge of the tablecloth, Kirk will foldunder and sew down 1inch of the material all aroundthe edge. Kirk is going to use a single piece of rectan-gular fabric that is 60 inches wide. What is the shortestlength of fabric, in inches, Kirk could use to make thetablecloth without putting any separate pieces of fabrictogether?

单项选择题Based on Figure 1, for each tree species, the number of seeds that were dispersed per m2 in Plot X must have been:

单项选择题According to the data in Figure 3, what effect, if any,did removing the herbaceous layer have on the percent distribution among the 1-year-old seedlings in the 1-hectare area of the forest? The removal of the herbaceous layer: