Which equations show the associative property?
select each correct answer.
a. 0.75+(−1.25+(−0.33))=(0.75+(−1.25)) +(−0.33)
b. 2.16+(−6.7+(−9.23))=2.16+(−9.23+(−6 .7))
c. (−3.45+(−0.12))+(−5.8)=−(3.45+0.12) +(−5.8)
d. (−4.6+(−2.1))+3.1=−4.6+(−2.1+3.1)

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 (%).