Verify that the values of the variables listed are solutions of the system of equations.
x = 4, y = 3
A. solution
B. not a solution
Answer: A
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = -4yi + 4xj + 2z6k; C: r(t) = cos ti + sin tj, 0 ? t ? 7
A. W = 98 B. W = 56 C. W = 28 D. W = 0
Mathematics
Solve. (x - 7)2 + x2 = (x + 1)2
A. -4, -12 B. 7, -1 C. 4, 12 D. 7, 12
Mathematics
For the functions f(x) and g(x), determine the domain of (f + g)(x) (the sum of f and g).f(x) = 
, g(x) = 6x2 - 5
A. {x ? x is a real number} B. {x ? x is a real number and x ? -6} C. {x ? x is a real number and x ? 0} D. {x ? x is a real number and x ? 5}
Mathematics
Perform the calculation.180° - 8°45'27"
A. 172°14'33" B. 171°14'33" C. 172°15'33" D. 171°15'33"
Mathematics