Find the domain of the vector-valued function. r(t) = 
i + 
j
A. 
< 3
B. 
? 3
C. t > 3
D. t ? 3
Answer: B
Mathematics
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Provide an appropriate response.Change 70 kilometers to miles. (Round to nearest tenth; 1 mi = 1.6 km.)
A. 112.5 B. 112 C. 43 D. 43.8 E. none of the above
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Find the indicated angle or side. Give an exact answer.Find the measure of angle A in degrees.
A. 30° B. 120° C. 60° D. 45°
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Multiply.
A. 
t2 - 
t - 
B. 
t2 + 
t - 
C. 
t2 - 
t - 
D. 
t2 - 
t - 
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Round the number to the nearest hundred.1,490
A. 1,490 B. 1,400 C. 1,500 D. 15 E. 1,450
Mathematics