If you think of the sign as an hungry crocodile then it becomes a lot less confusing. The sign (or crocodiles jaws) always point to the biggest number (because it is hungry and wants the biggest meal). So in this example 10<20, 20 is bigger so the crocodile goes for that number as it is the larger number.
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You should use your calculator for such simple sums. It is far quicker and involves fewer key depressions than posting the question on WA. But since you seem unable to carry out even this simple task, the answer is 24.5
31.2
Unfortunately, limitations of the browser used by WA means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc. They cannot be parallel and so, since the question has been asked, as is clearly part of your homework, it must have an answer other than "random lines". So then, if you assume that the lines are y = 2x + 4 and x + 2y = 12 they are mutually perpendicular.
Unfortunately, limitations of the browser used by WA means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc.
Unfortunately, limitations of the browser used by WA means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc.