Factor by grouping.xy + 11x - 2y - 22
A. (y - 11)(x + 2)
B. (x + 11)(y - 2)
C. (x - 11)(y + 2)
D. (y + 11)(x - 2)
Answer: D
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Find the curvature of the space curve.r(t) = ti + (sinh t)j + (cosh t)k
A. ? = sinh2 t
B. ? = cosh2 t
C. ? = 
D. ? = 
Solve. Express the answer in scientific notation to two decimals unless requested otherwise.If the distance from the earth to the sun were 92,000,000 miles, how long would it take a rocket, traveling at 2.4 × 103 miles per hour, to reach the sun? Round to three decimal places.
A. 3.833 × 104 hr B. 3.833 × 103 hr C. 3.833 × 102 hr D. 3.833 hr
The sequence is defined recursively. Write the first four terms.a1 = 5; an = an-1 - 1
A. a1 = 5, a2 = 4, a3 = 3, a4 = 2 B. a1 = 5, a2 = 6 , a3 = 7 , a4 = 8 C. a1 = -1, a2 = -2, a3 = -3, a4 = -4 D. a1 = 5, a2 = 6 , a3 = 5 , a4 = 4
Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. x + 5 B. x + 4 C. x - 4 D. x - 5