Study the following diagram of circle C, where AB¯¯¯¯¯¯¯¯ is a diameter that bisects the chord EF¯¯¯¯¯¯¯¯.
The circle as described in the problem. Segments C E and C F are marked congruent.

If m∠ACF=2(7x−4), what is the value of x?
Enter the correct value.

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2