For the given rectangular equation, give its equivalent polar equation.x2 + y2= 81
A. r = 9 sin ?
B. r = 81
C. r = 9 cos ?
D. r = 9
Answer: D
You might also like to view...
Assume the following: The population of California is five times the population of Massachusetts. The population of the United States is twenty times the population of Massachusetts. The population of the United States is sixty times larger than the population of Colorado. Which of the following is not true? ?
A. ?The ratio of the population of Colorado to the population of the United States is less then 1. B. ?The ratio of the population of Massachusetts to the population of California is less than 1. C. ?The ratio of the population of Massachusetts to the population of Colorado is greater than 1. D. ?The ratio of the population of Massachusetts to the population of Colorado is less than 1. E. The ratio of the population of Massachusetts and the population of Colorado to the population of California is less than 1.
Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. 2x + y - 11z = 1 B. 2x + y - 11z = -8 C. -8x - 6y - z = -11 D. -8x - 6y - z = -16
Find, if possible, AB and BA.A = 
, B = 
A. AB = 
, BA = 
B. AB = 
, BA = 
C. AB = 
, BA = 
D. AB = 
, BA = 
Simplify by combining like terms.-9x + (-3x)
A. 12x B. 6x C. -12x D. -6x