Calculate the arc length of the indicated portion of the curve r(t).r(t) = (3 + 2t2)i + (2t2 - 2)j + (5 - t2)k, 1 ? t ? 2
A. 27
B. 9
C. 45
D. 15
Answer: B
Mathematics
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Use the ac method to factor the trinomial, or state that the trinomial is prime.12x2 + 7x - 12
A. prime B. (3x + 4)(4x - 3) C. (3x - 4)(4x + 3) D. (12x + 4)(x - 3)
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Convert the volume as indicated.0.237 hectoliters to liters
A. 2.37 L B. 237 L C. 23.7 L D. 0.0237 L
Mathematics
Find the exact value of the expression.tan 255°
A. 
- 2
B. 
+ 2
C. -
+ 2
D. -
- 2
Mathematics
Evaluate the integral.
A. - 
+ 
tan-1 
+ C
B. - 
+ 
ln
+ C
C. - 
+ 
tan-1
+ C
D. 
+ 3tan-1
+ C
Mathematics