Solve the equation.x2 - x = 72
A. x = 1, 72
B. x = -8, -9
C. x = 8, 9
D. x = -8, 9
Answer: D
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Provide an appropriate response.Can a tangent line to a graph intersect the graph at more than one point? If not, why not. If so, give an example.
What will be an ideal response?
Solve the problem.Given that P(A) = 0.66, P(A ? B) = 1.07, and P(A ? B) = 0.26, find P(B).
A. 0.40 B. 0.93 C. 0.67 D. 0.41
Evaluate the definite integral and interpret the result.
A. 4; the shaded area above the x-axis minus the shaded area below the x-axis equals 4. B. 0; the shaded area above the x-axis is equal to the shaded area below the x-axis. C. 16; the shaded area above the x-axis minus the shaded area below the x-axis equals 16. D. 16; the shaded area above the x-axis plus the shaded area below the x-axis equals 16.
Find k such that the function is a probability density function over the given interval. Then write the probability density function.f(x) = kx2; [-1, 4]
A. 
; f(x) = 
x2
B. 
; f(x) = 
x2
C. 
; f(x) = 
x2
D. 
; f(x) = 
x2