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How many weeks are in a year 5 days a week?
260 da ys
Is -4982 a rational number?
Yes.
If 2x equals 3y and x does not equal 0 what is the ratio of x to y?
2x=3y The ratio of x:y is 3:2 as there are three xs in two ys.
What is an inverse formula?
It is a formula that is the reverse of another one.I.e if you put x = 1 into a formula and get y = 5, with the inverse formula you would put x =5 and get y = 1.To work out an inverse I will give an example:Y = 2X + 7there are 2 ways to do it, but my favourite is to replace ys with xs and vice versa so:X = 2Y + 7rearrange to get it as Y =...2Y = X - 7Y = (X-7)/2 Now put in a number like x = 5 into the top equation and you get y = 17 then putting x = 17 into the bottom equation you get 5, which means it is correct, the inverse.
-y plus 3y-6y plus 12y?
Additional comment: To help you visualize this, think of it without the Ys... ( -1 ) + 3 + ( -6 ) + 12 = 8 or... -1 + 3 - 6 + 12 = 8
