Evaluate the radical expression if it is a real number. Use a calculator to approximate irrational numbers to the nearest hundredth. If the expression is not a real number, so state.
A. 19
B. -7
C. 49
D. not a real number
Answer: B
You might also like to view...
Find an equation for the line tangent to the curve at the point defined by the given value of t.x = 10t2 - 7, y = t2, t = 1
A. y = 
x + 
B. y = 10x - 
C. y = 
x + 1
D. y = 
x - 
Factor completely.5x8 - 1280
A. (5x4 + 80)(x2+ 4)(x + 2)(x - 2) B. 5(x4 + 16)(x2+ 4)(x + 2)(x - 2) C. 5(x4 - 16)2 D. 5(x4 + 16)(x4 - 16)
Approximate f(x) to four decimal places.f(x) = ex - e-x, x = 3.3
A. 267.0366 B. 27.1495 C. 0 D. 27.0758
Find the vertex, focus, and directrix of the parabola with the given equation.(y - 4)2 = 12(x - 3)
A. vertex: (-3, -4) focus: (0, -4) directrix: x = -6 B. vertex: (4, 3) focus: (7, 3) directrix: x = 1 C. vertex: (3, 4) focus: (0, 4) directrix: x = 6 D. vertex: (3, 4) focus: (6, 4) directrix: x = 0