Solve the problem.A rectangular coal bin has a length of 
feet and a width of 
feet. What is its perimeter?
A. 6
ft
B. 6
ft
C. 12
ft
D. 12
ft
Answer: C
Mathematics
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Calculate the requested distance.The distance from the point S(-8, 1, 7) to the line x = -5 + 4t, y = -1 + 12t, 
A. 
B. 
C. 
D. 
Mathematics
Completely factor the expression.
a. -3n (3n - 4) (5n + 9)
b. 
c. 
d. -3n ( 3n + 4 ) ( 5n - 9 )
e. 
Mathematics
Solve the problem.Use the formula R = log 
+ B to find the intensity R on the Richter scale, given that amplitude a is 207 micrometers, time T between waves is 3.5 seconds, and B is 2.7. Round answer to one decimal place.
A. 1.8 B. 7 C. 4.5 D. 6.8
Mathematics
Write the augmented matrix for the system. 6x + 6y + 8z = 56 9x + 4y + 3z = 18 7x + 8y - 2z = 26
A. 
B. 
C. 
D. 
Mathematics