Replace the polar equation with an equivalent Cartesian equation.r = 
A. 
= 1
B. 7x - 9y = 1
C. 7y - 9x = 1
D. 
+ 
= 1
Answer: B
Mathematics
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Add or subtract as indicated. Write the answer in simplest form.
+ 
A. 5a + 7
B. 
C. 
D. 
Mathematics
Solve the logarithmic equation.log9 (x - 8) + log9 (x - 8) = 1
A. 11
B. -
, 
C. -11, 11
D. 
Mathematics
Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.tan ? = 
, 0 < ? < 
Find cos 2?.
A. 
B. - 
C. 
D. - 
Mathematics
Determine the quadrant(s) in which (x, y) is located so that the condition(s) is (are) satisfied. ? x< -8 and y< -6 ?
A. Quadrant I B. Quadrant I and II C. Quadrant III D. Quadrant II E. Quadrant IV
Mathematics