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A production possibility frontier, or PPF, is a line showing the maximum level of output in an economy of one good or group of goods in terms of another. At any point on this line, the economy is operating a...

In German, there are 3 ways of forming the past tense . The easiest 2 are the Perfect and Imperfect , and there is another slightly more complex form called the Pluperfect . As a quick summary, the Perfect t...

Let James = x Mike = x+8 Sam = Mike+5 = (x+8)+5 = x+13 Altogether: James + Mike + Sam = 72 Therefore, x + (x+8) + (x+13) = 72 Now solve for x: 3x + 21 = 72 Bring 21 to the other side: 3x = 72-21 = 51 Divide ...

To begin you must identify the co-efficients of each x term, essentially what number comes before x 2 , x and the integer value. a = 1, b = 3, c = -4 . We then substitute these values into the quadratic form...

A thorough understanding of all the mathematical formulas prescribed in the subject specification is crucial for your survival in the no-mans-land of the maths exam, where your examiner tries his best to mur...