If ?DEF is isosceles and ET bisects ?DEF, then
(a) ET ? DF.
(b) ET bisects DF.
(c) Neither (a) nor (b) is necessarily true.
(d) Both (a) and (b) are true.
(e) ?DET ? ?FET.
(c) Neither (a) nor (b) is necessarily true.
You might also like to view...
Sketch a graph of a function f that has the given properties.(a) Defined for all real numbers(b) Increasing for -3 < x < -1 and 2 < x < ?(c) Decreasing for -? < x < -3 and -1 < x < 2(d) Concave upward for -? < x < -2 and 1 < x < ?(e) Concave downward for -2 < x < 1(f) f'(-3) = f'(-1) = f'(2) = 0(g) Inflection point at (-2, 0) and (1, 1)
What will be an ideal response?
Evaluate the surface integral of the function g over the surface S.G(x, y, z) = 
; S is the surface of the parabolic cylinder 10y2 + 2z = 14 bounded by the planes 
x = 1, y = 0, and z = 0
A. 
B. 
C. 
D. 
Find the derivative of y with respect to x, t, or ?, as appropriate.y = ln 9x
A. 
B. 
C. - 
D. - 
Simplify the expression.-5(10x + 4) + 10(2x + 7)
A. 5x - 1 B. -30x + 4 C. -70x D. -30x + 50