Write the expression in the standard form a + bi.2(6 - 3i)
A. 6 - 6i
B. 12 + 6i
C. 12i - 3i
D. 12 - 6i
Answer: D
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Provide an appropriate response. Determine the mean age of a student in a technical mathematics class whose ages are: 42, 18, 19, 20, 23, 36, 18, 25, 20, 20, 24, 22, 26, 29, 37, 20, 20, 27, 42, 51, 24, 45, 24, 18, 31.
A. 27.2 B. 24 C. 20.7 D. 20
Find the standard form of the equation of the ellipse satisfying the given conditions.Center at (0, 0); Focus at (3, 0); Vertex at (-5, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the problem.The number of centimeters, d, that a spring is compressed from its natural, uncompressed position is given by the formula d = 
, where W is the number of joules of work done to move the spring and k is the spring constant. Solve this equation for W. Use the result to determine the work needed to move a spring 3 centimeters if it has a spring constant of 0.6.
A. W = 
; 30 joules
B. W = 
; 2.7 joules
C. W = 
; 0.8 joules
D. W = 2d2k; 10.8 joules
Indicate whether the value of x shown is a solution to the given equation by answering true or false.Value of x: 72
Equation: 4(x + 8) = 5(x - 8)
A. True B. False