What is the value of arccos(−1/2)in radians?

So me with this math problem. find the value of x the table shows the masses of 50 eggs. mass: 40-44 eggs: 6 mass: 45-49 eggs: x mass: 50-54 eggs: 12 mass: 55-59 eggs: 10 mass: 60-64 eggs: 7 mass: 65-69 eggs: 2 you!

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?