Determine the constant of variation for the stated condition.t varies jointly as r and s, and t = 36 when r = 45 and s = 20.
A. k = 25
B. k = 
C. k = 20
D. k = 
Answer: B
Mathematics
You might also like to view...
Divide. Write a mixed numeral for the answer.27 ÷ 1
A. 17
B. 18
C. 19
D. 16
Mathematics
Solve the problem.For a hyperbolic mirror the two foci are 42 cm apart. The distance of the vertex from one focus is 6 cm and from the other focus is 36 cm. Position a coordinate system with the origin at the center of the hyperbola and with the foci on the y-axis. Find a Cartesian equation for the hyperbola.
A. 
- 
= 1
B. 
- 
= 5
C. 
- 
= 5
D. 
- 
= 1
Mathematics
Find the exact value of y, or state that y is undefined.y = sin-1 (-3)
A. ? B. 0 C. -3 D. undefined
Mathematics
Determine whether the improper integral converges or diverges, and if it converges, find its value.
a. 15
b. - 15/2
c. Diverges
d. 15/2
Mathematics