Solve the triangle.a = 19, b = 16, c = 11
A. A = 87.4°, B = 57.3°, C = 35.3°
B. A = 57.3°, B = 87.4°, C = 35.3°
C. A = 87.4°, B = 35.3°, C = 57.3°
D. A = 35.3°, B = 57.3°, C = 87.4°
Answer: A
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Plot the parametric surface over the indicated domain.r(u, v) = cos u sin vi + cos v sin uj + sin vk; 0 ? u ? 2?, 0 ? v ? 2?
A. 
B. 
C. 
D. 
The function s gives the displacement (in ft) of an object as a function of time (in seconds). Calculate values of the average velocity for the given values of t and find the instantaneous velocity at the indicated value of t by noting the limit of the average velocities.s = 5t - 4; when t = 4; use values of t of 3.5, 3.9, 3.99, 3.999
A. Average velocities: 19.5, 19.9, 19.99, 19.999
v = 20 ft/s
B. Average velocities: 20, 20, 20, 20
v = 20 ft/s
C. Average velocities: 5, 5, 5, 5
v = 5 ft/s
D. Average velocities: 4.5, 4.9, 4.99, 4.999
v = 5 ft/s
Solve the problem.A person puts $30 into a bank account on January 1, $40 on February 1, $50 on March 1, and so forth. How much has the person put into the bank account by December 30?
A. $1080 B. $2040 C. $1020 D. $840
Let x represent one number and let y represent the other number. Use the given conditions to write a system of nonlinear equations. Solve the system and find the numbers.The sum of the squares of two numbers is 65. The difference of the two numbers is 7. Find the two numbers.
A. -8 and -1 B. 1 and 8 or -8 and -1 C. -1 and 8 or -8 and 1 D. 1 and 8