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Riddles Q: Tuesday, Sam and Peter went to a restaurant to eat lunch. After eating lunch, they paid the bill. But Sam and Peter did not pay the bill, so who did? A: Their friend, Tuesday. Q: What gets broken without being held? A: A promise. Q: What is always coming but never arrives? A: Tomorrow Q: What goes through towns and over hills but never moves? A: A Road Q: What has Eighty-eight keys but can’t open a single door? A: A piano Q: What has a neck but no head? A: A bottle Q: A monkey, a squirrel, and a bird are racing to the top of a coconut tree. Who will get the banana first, .... continue reading ....
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Mathematics: Change of subject of formular

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Change of Subject Formula Whenever the subject of a formula is to be changed, the intention is to make the value becoming the subject stand alone and remain on the left hand side of the expression. The methods used to effect this change may be any basic mathematical principles like multiplication, addition, subtraction, division, finding square roots, etc. Whatever operation that is used to perform the change must be applied to both sides of the expression (formula). Examples; 1 . Make u the subject of the formula; v 2 = u 2 + 2as. Solution Step 1 Rearrange by bringing “u 2 ” to the LHS of the expression and carrying v 2 to the RHS of the expression. The reason for this is because you have been instructed to make “u” the subject of the formula according to the question. -u 2 = 2as – v 2 Note; Whenever you carry figures from one side of an expression to another, the sign changes to the opposite. Step 2 Multiply both sides by -1 in order to eliminate the – (minus sign); u 2 = 2as + ...
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