Prove the formula that: ((∃x)(F(x)∧S(x))→(∀y)(M(y)→W(y)))∧( (∃y)(M(y)∧¬W(y)))
⇒(∀x)(F(x)→¬S(x))

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost