What is -18-x-x40?

What is the perimeter of a square that has one side 6 meters long? What is a semi presedential republic? You want the formula to find the height of the triangle as you have the length of the hypotoneous? How do you write one hundred eighty six thousand in numbers? What is 8 7 as a mixed number? How many m in a km? What is a short whisker? What is the best estimate for the products 525 and 38? What does demense? Is the square root of 12 an integer? Where do form leucocytes? How much gas would 48 miles cost? How tough is marble? What solid figure has 4 faces that are triangles and 1 face that is a rectangle? A number when rounded off to the nearest ten becomes 330.what could number be? Why is -88 square root of 6? What is 6 ½ divided by 5 out of 6 equal to? Is line symmetry the same as reflectional symmetry? How many km in a degree? How do you figure out what fractions are greater?