Solve the equation.
- 
= 1
A. ?
B. {-3, -1}
C. {3}
D. {3, -1}
Answer: D
Mathematics
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Find the curvature of the curve r(t).r(t) = (9 + ln(sec t))i + (7 + t)k, -?/2 < t < ?/2
A. ? = cos t B. ? = -cos t C. ? = 1 - cos t D. ? = sin t
Mathematics
Solve the problem.A square has an area of 49 square inches. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 square inches. Find the dimensions of the rectangle.
A. 3 in. by 4 in. B. 5 in. by 10 in. C. 4 in. by 9 in. D. 5 in. by 9 in.
Mathematics
Perform the operation. Write the answer as a fraction in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Use the distributive property to simplify.
(9x2 - 9x + 6)
A. 6x2 - 18x + 12 B. 6x2 + 6x - 4 C. 6x2 - 6x + 4 D. 6x2 - 9x + 6
Mathematics