What is the minimum value of 
? Restrict your attention to the horizontal span of 0 to 10. Round your answer to two decimal places.
?
A. 30.15
B. 6.11
C. 33.72
D. 4.22
Answer: A
Mathematics
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A boy is standing on a flat field and tosses his ball toward a second boy standing at the other end of the field. The path of the ball is a parabola, and the equation of the path is 
True or false? The parabola opens to the right.
A. False B. True
Mathematics
Factor, if possible.r8 + 40r4 + 400
A. (r4 - 20)2 B. (r4 + 20)(r4 - 20) C. Prime polynomial D. (r4 + 20)2
Mathematics
Evaluate the expression.
7/2
A. - 56
B. - 16,384
C. 
D. not a real number
Mathematics
Find the least common multiple (LCM) of the pair of numbers.21 and 48
A. 1008 B. 336 C. 21 D. 3024
Mathematics