Find the indicated cross product.v = 4i - 5j + k, w = 2i - 2j - kFind w × v.
A. -2i + 7j - 7k
B. -7i - 6j - 2k
C. 6i + 7j - 2k
D. 7i + 6j + 16k
Answer: B
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Find the equation of the circle that satisfies the following conditions. Express the final equation in the form x2 + y2 + Dx + Ey + F = 0.Tangent to the x axis, a radius of length 7, and abscissa of center is –8
A. x2 + y2 - 16x - 14y + 64 = 0 and x2 + y2 - 16x + 14y + 64 = 0 B. x2 + y2 + 16x - 14y + 64 = 0 C. x2 + y2 + 16x - 14y + 64 = 0 and x2 + y2 + 16x + 14y + 64 = 0 D. x2 + y2 + 16x + 14y + 64 = 0 E. x2 + y2 - 16x + 14y + 64 = 0
Solve the problem.In how many ways can a student work 7 out of 10 questions on an exam?
A. 720 B. 120 C. 10,000,000 D. 21
Solve the problem.An initial investment of $660 is appreciated for 11 years in an account that earns 1% interest, compounded continuously. Find the amount of money in the account at the end of the period.
A. $722.81 B. $39,516,933.46 C. $736.74 D. $1650.62
Solve the system by back substitution.x + 4y+ 4z = -11 2y + 5z = -21 2z = - 10
A. (1, 2, -5) B. No solution C. (1, -5, 2) D. (-6, 2, -5)