Determine whether the graph of the equation is a circle or an ellipse.
+ 
= 1
A. Ellipse
B. Circle
Answer: A
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Mathematics
Use a truth table to determine whether the symbolic form of the argument is valid or invalid.(p ? q) ? (q ? r)p ? r
A. Valid B. Invalid
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. x - 4
C. x + 4
D. 
Mathematics
Solve the problem.A football team gained 35 yards on one play, lost 14 yards on another, and gained 38 yards on the last play of the first half. They had already gained 400 yards during the half. What was the total yardage gain for the first half?
A. 341 yards B. 459 yards C. 487 yards D. 473 yards
Mathematics