Solve the equation.
+ 7 = 6
A. {1}
B. {169}
C. {-1}
D. ?
Answer: D
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Find the work done by F over the curve in the direction of increasing t.F = -5zi + 7xj + 7yk; C: r(t) = ti + tj + tk, 0 ? t ? 1
A. W = 3
B. W = 9
C. W = 
D. W = 18
Solve the problem.The formula r = 2
can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in feet. What was the speed of a car that left a skid mark of 165 feet?
A. 10
mph
B. 330 mph
C. 5
mph
D. 50
mph
Solve the problem.A hall 130 feet in length was designed as a whispering gallery. If the ceiling is 25 feet high at the center, how far from the center are the foci located?
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Let f(x, y, z) = xz3ez2+1 + x2y3z4 + y ln(e2 - 1). Find 
.
What will be an ideal response?