Find the vertex, focus, and directrix of the parabola  figure 1.png)
What will be an ideal response?
Vertex (0,0) , focus: F (2,0) , directrix: is x = -2
Mathematics
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Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).9
+ 9i
A. 18(cos 30° + i sin 30°) B. 18(cos 60° + i sin 60°) C. 18(cos 330° + i sin 330°) D. 18(cos 300° + i sin 300°)
Mathematics
Solve the equation.-x = -4
A. {0} B. {4} C. {-1} D. {-4}
Mathematics
Determine whether or not the function is one-to-one.f(x) = 3x2 + 2
A. Yes B. No
Mathematics
Find the present value. Round to the nearest cent.To get $10,500 after11 years at 7% compounded annually
A. $5337.67 B. $4750.93 C. $5511.53 D. $4988.47
Mathematics