Is the following statement true or false?

every diameter of a circle is a chord.
justify.

(i know it's true but could someone because im stuck on how i should word it)

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

The table above shows approximate conversions from gallons to liters. what is the value of x?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0