List any four attachments for a hydraulic excavator

The areas of three cross sections are given below.  They are each 75 feet from each other for a total of 150 ft between the outer sections.  Area 1 = 140 ft^2  Area m = 165 ft^2, and Area 2 = 170 ft^2    Calculate the volume using both methods below;  Average End Area method.   Prismoidal Formula method  

Why might the laboratory and field optimum moisture contents vary for a particular soil? 

If your scores on the first four math exams are 71, 60, 81, and 82, what score do you need on the next exam for your overall mean to be at least 80?

Find the accumulated amount at the end of 9 months on an $500 deposit in the bank paying simple interest at the rate of 3% year. ​

LSAT test scores are normally distributed with a mean of 500 and a standard deviation of 100. Find the probability that a randomly chosen test taker will score between 300 and 600. Round your answer to four decimal places. ​

Find the median of 7, 4, 5, 6, 13, 7, 23, and 3. ​

The universal set is .If and , find .

Let .Find the set

True or False? Ochre was a mineral resource used by many cave painters worldwide.