Find the limit.
9 cos 
A. 1
B. 0
C. - 9
D. 9
Answer: C
Mathematics
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Write the equation of the line that satisfies the given conditions. Express the final equation in standard form.contains the point (–1, 5) and is perpendicular to the line 6x + 7y = –6
A. 7x - 6y = –37 B. 7x - 6y = 23 C. 7x + 6y = –37 D. x - 6y = 23 E. 7x + 6y = 23
Mathematics
Graph the pair of parametric equations in the rectangular coordinate system.x = 7 sin t, y = 7 cos t; 0 ? t ? 2? 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.
A. 
B. 
C. a - 2b + 1
D. a - b
Mathematics
Solve the equation. Identify the equation as an identity, an inconsistent equation, or a conditional equation.
+ 
= 
A. Inconsistent, ? B. Conditional, {4} C. Conditional, {-5} D. Identity, {all real numbers}
Mathematics