Find the constant of variation, k. t varies directly with r and inversely with s; t = 3 when r = 21 and s = 28
A. k = -4
B. k = - 
C. k = 
D. k = 4
Answer: D
You might also like to view...
Provide an appropriate response.Graph the functions f(x) = 
and g(x) = 
together to identify the values of x for which 
< 
.Confirm your findings algebraically.
A. (-1, 1) ? (1, ?) B. (-3, ?) C. (-?, -3) D. (-3, -1) ? (1, ?)
Find the measures of the angles or the side lengths as indicated.Find the lengths of the other sides of the parallelogram.
= 92.0 and 
= 51.1 
A. 
= 51.1, 
= 92.0
B. 
= 51.1, 
= 92.0
C. 
= 51.1, 
= 92.0
D. 
= 51.1, 
= 102.2
Solve the problem.What is the range of the cotangent function?
A. all real numbers from -1 to 1, inclusive B. all real numbers greater than or equal to 1 or less than or equal to -1 C. all real numbers, except integral multiples of ?(180)° D. all real numbers
Multiply. Write the answer in simplest form. Find both an exact product and an estimated product.
? 
A. Exact: 
Estimate: 20
B. Exact: 
Estimate: 20
C. Exact: Exact: 
Estimate: 12
D. Exact: 
Estimate: 12