Ok this equation is 20 = 0.004 x N, yes? Rearrange for the variable 'N' to get 20/0.004 = N, N = 5000. Not hard.
(20 x 1) + (1/10) = 20.1OR(20) x (1.1) = 22
x=1
Let the unknown number be n.Then 20 x n = 177 : so n = 177 ÷ 20 = 8.85 or 817/20.
Per cent or percentage equates to a hundredth. So, 7.75 = n x 20/100 n = 7.75 x 100/20 = 7.75 x 5 = 38.5. 20% of 38.5 is 7.75
Ok this equation is 20 = 0.004 x N, yes? Rearrange for the variable 'N' to get 20/0.004 = N, N = 5000. Not hard.
Try using a calculator! 20 x 4 = 80. It could not be simpler!
Then, it's actually x you obtain since there is no n variable for y = x! You only have x and y.
(20 x 1) + (1/10) = 20.1OR(20) x (1.1) = 22
20
x=1
1 + x + 2x = 20 So 1 + 3x = 20 so that 3x = 19 then x = 19/3 or 61/3
Let the unknown number be n.Then 20 x n = 177 : so n = 177 ÷ 20 = 8.85 or 817/20.
Per cent or percentage equates to a hundredth. So, 7.75 = n x 20/100 n = 7.75 x 100/20 = 7.75 x 5 = 38.5. 20% of 38.5 is 7.75
When, in algebra, two letters are written next to each other as a term, such as m and n becoming mn, it means they are multiplied. So mn is a shorter way of writing "m times n" or "m x n"Therefore, when m = 1 and n = 1, mn = 1 x 1 = 1
n * 4 = 80 Divide both sides by 4: n = 20
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