Solve the problem.Evaluate 
at t = 
? for the function w(x, y) = x2 - y2 - 7x; x = cost, y = sin t.
A. 7
B. -5
C. -11
D. -9
Answer: A
Mathematics
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Find the exact value of y, or state that y is undefined.y = cos-1 
A. - 
B. 
C. 
D. 
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Use substitution to determine whether the given ordered pair is a solution of the given equation.
; 6x - 4y = 5
A. Yes
B.
| No |
Mathematics
Use long division to divide.
?
?
?
A. 4 B. 2 C. -2 D. 1 E. 3
Mathematics
Use a formula to solve the problem.A rectangular Persian carpet has a perimeter of 216 inches. The length of the carpet is 18 inches more than the width. What are the dimensions of the carpet?
A. 63 inches by 81 inches B. 99 inches by 117 inches C. 45 inches by 63 inches D. 90 inches by 108 inches
Mathematics