Use a grapher to find the vertex, rounding to the nearest hundredth when necessary.f(x) = x2 + x - 4

A. (0.5, -4.25)
B. (-0.5, -4)
C. (0.5, -3.75)
D. (-0.5, -4.25)


Answer: D

Mathematics

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Find the torsion of the space curve.r(t) = (9t sin t + 9 cos t)i + (9t cos t) - 9 sin t)j - 9k 

A. ? = 1 B. ? = 0 C. Undefined D. ? = -1

Mathematics

Calculate the circulation of the field F around the closed curve C.F = y2i + x3j; curve C is the counterclockwise path around the triangle with vertices at  , and 

A.
B. - 
C. 0
D.

Mathematics

Provide an appropriate response. Using the given frequency distribution table for the 2-hour intervals of the temperatures for June 24, determine the average temperature which occurred during the 24-hour period. 

A. 82o B. 77o C. 92o D. 79.3o

Mathematics

Solve the equation. Find the exact solution.

(b) {2, -3} (c) {1,6} (d) {-1,6}

Mathematics