PLS HELP!! Which statement correctly describes the relationship between the diameter and circumference of a circle?

A.
The ratio of a circle's circumference to its diameter is equal to π.

B.
The ratio of a circle's diameter to its circumference is equal to π.

C.
The sum of a circle's diameter and its circumference is equal to π.

D.
The difference between a circle's circumference and its diameter is equal to π.

Step-by-step explanation:

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f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is