Solve the problem.At a fixed temperature, the resistance R of a wire varies directly as the length l and inversely as the square of its diameter d. If the resistance is 1.25 ohm when the diameter is 1 mm and the length is 250 cm, what is the resistance when the diameter is 2 mm and the length is 720 cm?
A. 225 ohm
B. 0.9 ohm
C. 1.8 ohm
D. 180 ohm
Answer: B
Mathematics
You might also like to view...
Find the missing values.
A. $157.50, $192.50 B. $154.00, $196.00 C. $78.75, $271.25 D. $161.00, $189.00
Mathematics
For the given functions f and g, find the requested function and state its domain.f(x) = 
; g(x) = 2x - 7Find 
.
A. 
(x) = 
; (-?, 0) or (0, ?)
B. 
(x) = 
; [0, ?)
C. 
(x) = 
; 
or 
D. 
(x) = 
; 
or 
Mathematics
Write in terms of i.
A. - 
i
B. 
C. 
i
D. - 
Mathematics
In ''The Numbers Game,'' a state lottery, four numbers are drawn with replacement from an urn containing the digits 0-9, inclusive. Find the probability of a ticket holder having the indicated winning ticket.
All four digits in any order(including the other winning tickets) a. 0.0024 b. 0.0017 c. 0.0004 d. 1 e. 0.0002 f. 0
Mathematics