What is the circumference of a circle with a diameter of 9

C≈28.27

Step-by-step explanation:

C ≈ 28.27

Step-by-step explanation: Using the formulas

                                             C=2πr

                                             d=2r

                                             Solving for C

                                             C= πd = π·9 ≈ 28.27433

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions