Refer to the Excel output above. Roberta owns a small car dealership and she completed a series of studies to better understand what factors affect the price of cars. In this study she looked to see whether the size of the engine affected the cost of the car. There were three engine sizes (Note: 4 cylinder is a small engine, 6 cylinder is intermediate size engine and 8 cylinder is a large engine). How would you best describe this study?

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years