What is the length of BC? From the markings on the diagram, we can tell E is the
midpoint of BC and is the midpoint of AC
We can apply the
theorem: ED = 1BA.
V
Substituting in the expressions for the lengths and
solving for x, we get x =
Now, since BE = x, then BC =

correct answer:

b.(19,-2)

sites:

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.