Find the negation of the statement.
?
All squares are rectangles.
?
A. No squares are rectangles.
B. Some squares are rectangles.
C. Squares are not rectangles.
D. Some squares are not rectangles.
Answer: D
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Solve the problem.The Van der Waals equation provides an approximate model for the behavior of real gases. The equation is P(V, T) = 
- 
, where P is pressure, V is volume, T is Kelvin temperature, and a,b , and R are constants. Find the partial derivative of the function with respect to each variable.
A. PV = 
- 
; PT = 
B. PV = - 
+ 
; PT = 
C. PV = 
- 
; PT = 
D. PV = 
; PT = 
- 
Solve. Give your answer as a mixed number if appropriate. 
= 
A. 5
B. 8
C. 7
D. 3
Write the English phrase as an algebraic expression. Let the variable x represent the number.six times the sum of some number and eleven
A. 6(x - 11) B. 6x + 11 C. 6(x + 11) D. 6x - 11
Find the critical number(s), if any of the function 
Select the correct answer.
a. 1/3 b. 1/9 c. 0, 1/3 d. 0, 1/9