Find the expected value of the probability density function to the nearest hundredth.f(x) = 4x-5; [1, ?)
A. 0.80
B. 1.00
C. 1.67
D. 1.33
Answer: D
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Provide an appropriate response.Identify a verbal interpretation of the statement: 3x = 12
A. The product of three and a number is twelve. B. The sum of three and two times a number is twelve. C. Three is the result of twelve times a number. D. The quotient of a number and three is twelve.
Find the exact value of the expression.sin 15°
A. 
B. - 
C. 
D. - 
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. not applicable B. x = 0, y = 0, z = 1; (0, 0, 1) C. x = 2, y = 1, z = 0; (2, 1, 0) D. x = 0, y = 1, z = 0; (0, 1, 0)
Find an equation for the hyperbola described. Graph the equation.Center at (0, 0); vertex at (0, 7); focus at (0, 
)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1