Hey man! I'm here to help. I'm in Grade 8 too :)
Answer:
b
Step-by-step explanation:
took the test i got bj : fz wf
Answer:
Work done
lb-ft
Step-by-step explanation:
The density of the chain in lb/ft is equal to
lb/ft
Total Work done is equal to the summation of work done up to the top of building.
We will use integration for this evaluation.
The mathematical relation is as follows

where "p" is the density
Substituting the given values, we get

Work done
lb-ft
75 decreased by 40% is 45
Answer:
384
Step-by-step explanation: