-3xy-x²y²+1 is evaluated when x=-1 and y=-1 , then what is the exact value ?
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Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.