This is about similar polygons in geometry

Father's shadow is 9 feet long.

Step-by-step explanation:

From the given figure,

ΔABC and PQR will be similar.

So their corresponding sides will be proportional.

AC =

AC = 9 feet

Therefore, measure of the father's shadow is 9 feet.

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.

graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation: