false
Assuming that you mean not (p or q) if and only if P ~(PVQ)--> P so now construct a truth table, (just place it vertical since i cannot place it vertical through here.) P True True False False Q True False True False (PVQ) True True True False ~(PVQ) False False False True ~(PVQ)-->P True True True False if it's ~(P^Q) -->P then it's, P True True False False Q True False True False (P^Q) True False False False ~(P^Q) False True True True ~(P^Q)-->P True True False False
false
It is false.
False because every quadrilateral is a four sided shape
False
false
false
False.
False. A closed circuit is a complete loop where electricity can flow continuously from the power source, through the components, and back to the source.
False.
False
False. The myth that spinach is a rich source of iron is false. While spinach does contain iron, it is not as high in iron as previously believed.
false
False.
False
False. Non-point-source pollution refers to pollution that comes from multiple diffuse sources, such as urban runoff or agricultural activities. It is challenging to trace non-point-source pollution to one specific source due to its wide distribution and various contributors.