Solve the equation.
= 
- 
A. {42}
B. {0}
C. 
D. {1}
Answer: D
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Illustrate Goldback's conjecture for the following number.40
A. 23 ? 5 B. 20 + 20 C. 13 + 27 D. 17 + 23
Provide an appropriate response.Suppose that you are solving a system of three linear equations and have evaluated D, Dx, Dy, and Dz. Under what condition does Cramer's rule not apply?
A. D = 0, and either Dx = 0, Dy = 0, or Dz = 0 B. Dx = 0 C. Dx = 0, Dy = 0, or Dz = 0 D. D = 0
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Find an equation of variation in which y varies directly as x and the following is true.y = 45, when x = 12
A. y = 45x
B. y = 
y
C. y = 
x
D. y = 
x