Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.(-4x5y)4
A. (-4)4x20y4
B. (-4)4x9y4
C. -16x5y
D. -16x5y4
Answer: A
Mathematics
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Simplify, if possible, by combining like terms.-8y - 15y
A. 120y B. -23y2 C. 23y D. -23y
Mathematics
Find the unit vector having the same direction as v.v = 4i + 3j
A. u = 
i + 
j
B. u = - 
i - 
j
C. u = 
i + 
j
D. u = 20i + 15j
Mathematics
Find the x-value of all points where the function has relative extrema. Find the value(s) of any relative extrema.f(x) = 2 + 8x - x2
A. Relative minimum of 0 at 4. B. Relative maximum of 50 at 0. C. Relative maximum of 16 at - 4. D. Relative maximum of 18 at 4.
Mathematics
Find the indicated term for the sequence.an = n2 - n; a14
A. 182 B. 14 C. 210 D. -182
Mathematics