One of the cornfields involved in the studies had an area of 2.5 hectares. In Study 2, how many kg N was added to that field as fertilizer N ?

单项选择题Based on the description of a lahar deposit, how do clasts and matrix particles differ in size?

单项选择题According to Figure 3, clasts and matrix particles having diameters greater than or equal to 0.5 mm made up approximately what percent of the total mass of the combined samples?

单项选择题Tomas plans to construct a circular fishpond with a diameter of 9 ft. Which of the following is closest to the length, in feet, of the decorative fencing that Tomas needs to enclose the fishpond along its perimeter?

单项选择题Christopher bought 4 cans of soup for a total of $3.36,which included sales tax of $0.16. At the same per-can cost, what is the cost before the sales tax is added for 6 cans of the same soup?

单项选择题Which of the following inequalities is an equivalent algebraic expression for the statement below?5 less than the product of 4 and a number n is greater than 28

单项选择题Last week, customers bought 5 times as many Style. A notebooks as Style. C notebooks, and customers bought 2 times as many Style. B notebooks as Style. C notebooks. Last week, customers bought 392 notebooks. What total amount did customers pay for the 392 notebooks?

单项选择题The least common multiple (LCM) of 2 numbers is 108. The greater of the 2 numbers is 54. What is the maximum value of the other number?

单项选择题If r = 5 z then 15 z = 3 y, then r =

单项选择题Lee worked 22 hours this week and made $132. If she works 15 hours next week at the same pay rate, how much will she make?

单项选择题If y = 3, then y3(y3-y)=