Convert the given number to standard notation.6.449 × 10-5
A. 0.000006449
B. 0.00006449
C. 0.0006449
D. -644,900
Answer: B
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Choose the first set in the list natural numbers, whole numbers, integers, rational numbers, and real numbers that describes the following number.
A. Real numbers B. Natural numbers C. Whole numbers D. Rational numbers
Calculate the direction of 
and the midpoint of line segment P1P2.P1(-6, 6, 4) and P2(-4, 12, 1)
A. 
i + 
j + 
k; 
B. 
i + 
j - 
k; 
C. 
i + 
j - 
k; 
D. 
i + 
j - 
k; 
Find the vertices of the hyperbola.9x2 - 25y2 = 225
A. (-5, 0), (5, 0) B. (0, 3), (0, -3) C. (0, 5), (0, -5) D. (-3, 0), (3, 0)
Solve.A projectile is thrown upward so that its distance above the ground after t seconds is 
After how many seconds does it reach its maximum height?
A. 30 sec B. 7 sec C. 22.5 sec D. 11 sec