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Teens who begin drinking before age 15 are five times more likely to develop alcohol dependence than those who begin drinking at age 21. Teens who begin drinking before age 15 are five times more likely to develop alcohol dependence than those who begin drinking at age 21.

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Is 19 or 21or 24 s prime or composite?

One is prime, the other two are composite.


How old is jasmine from house of payne?

jasmine is 11 turning 12 on August 25 2010


What are the proper factors of 42?

The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.The proper factors are 1, 2, 3, 6, 7, 14, and 21or 2, 3, 6, 7, 14, and 21 if the number 1 is excluded as it is in some definitions of proper factor.


What is 3 plus 7 times 2 plus 4?

depends on how question is wordedif (3 + 7) times (2 + 4)then 10 x 6 = 60also could be3 plus (7 x 2) plus 4 = 21or could be[(3 + 7) x 2] + 4 = 24


Date of southern hemisphere winter solstice?

Date of Winter Solstice in the Sothern Hemisphere is June 21.


What is the longest day of the year in the southern hemisphere?

December 20 or 21st.While June 21or 22 is called the summer solstice and longest day in the Northern Hemisphere, it is called the winter solstice and shortest day in the Southern Hemisphere.In December the situation is reversed, because the Earth is now tilted away from the earth (if we consider the North Pole to be at the top!). Consequently the Southern Hemisphere is nearer to the sun in December, and the season is called summer or summer time, with longer hours of sun than winter time, and with barbecues and bikinis on the beach on Christmas day.The precise astronomical moment of summer solstice in the Southern Hemisphere occurs around December 20/21, but December 21st is traditionally the day identified as the longest day.solstice


Why do we follow the order of operation?

What the order of operations mainly does is to ensure that you do the "shorthand" operations first; this can be seen by examining what the operations mean (I'll demonstrate using Multiplication and Addition):Consider that Multiplication (×) is a "shorthand" way of writing repeated Addition; for example 5 × 4 is the same as 5 + 5 + 5 + 5 or 5 added to itself 4 times; or 4 + 4 + 4 + 4 + 4 which is 4 added to itself 5 times - both give the same answer of 20.Now consider if you have 5 × 4 + 1. The multiplication is "shorthand" for repeated addition and can be written out in full, giving:5 × 4 + 1 = 5 + 5 + 5 + 5 + 1 = 20 + 1 = 21or 5 × 4 + 1 = 4 + 4 + 4 + 4 + 4 + 1 = 20 + 1 = 21Now, Addition has the Commutative property - that is if you add two numbers together the order of the numbers does not matter; ie 20 + 1 is the same as 1 + 20; so what about 1 + 20:1 + 20 = 1 + 5 + 5 + 5 + 5 = 1 + 5 × 4or 1 + 20 = 1 + 4 + 4 + 4 + 4 + 4 = 1 + 5 × 4using that 5 + 5 + 5 + 5 = 4 + 4 + 4 + 4 + 4 = 20 from above.Thus for 5 × 4 + 1 = 1 + 5 × 4 to be true the Multiplication (shorthand for repeated Addition) must be done first.So there is an order of operation to ensure that these "shorthand" operations are done first.To help remember the order of operation, there are several acronym mnemonics whereby the order of the letters gives the order of operations:BODMAS = Brackets Order Divide Multiply Add SubtractBIDMAS = Brackets Indices Divide Multiply Add SubtractPEDMAS = Parentheses Exponents Divide Multiply Add SubtractBrackets (or parentheses) are used to group parts of the expression together and represent a "number" - they are useful to override the normal order of operation, for example in 1 + 5 × 4 the multiply is normally done first, ie it is 1 + (5 × 4) = 1 + 20 = 21; but if the addition must be done first, then it is put in brackets: (1 + 5) × 4 = 6 × 4 = 24 - a different value. This comes up mostly in formulae; for example in converting Fahrenheit temperature to Celsius, the formula is C = (F - 32) × 5 ÷ 9; the subtraction must be done before the multiply.Order/Indices/Exponents is a "shorthand" way of writing repeated multiplication, for exmaple 2³ = 2 × 2 × 2 = 8; thus should be done before multiplication.If there is more than one of the same operation in a row, then, for:Brackets (Parentheses) do them inner to outer, eg ((1 + 7) - (3 + 2)) × 2 = (8 - 5) × 2 = 3 × 2 = 6Order/Indices/Exponents do them right to left (top to bottom), eg 2^3^4 = 2^(3^4) = 2^81For Divide, Multiply, Add, Subtract do them left to right, eg 5 - 3 - 1 = (5 - 3) - 1 = 2 - 1 = 1.One thing of note is that the acronyms are slightly wrong in that if the order of the letters is strictly followed it can give a wrong answer; for example 1 - 2 + 3They all say do the addition before the subtraction, so it look like this becomes: 1 - (2 + 3) = 1 - 5 = -4However, the correct answer is (1 - 2) + 3 = 2 with the "subtraction" done first.This is because subtraction, being the inverse of addition, can be considered as "shorthand" for the addition of a negative number: 1 - 2 = 1 + -2; thus:1 - 2 + 3 = 1 + -2 + 3 = (1 + -2) + 3 = -1 + 3 = 2Addition and subtraction really have the same "priority" in the order of operations and should be done in the order they are met (from left to right), or always do the subtraction (Division) first.Similarly Division and Multiplication really have the same "priority" in the order of operations and should be done in the order met (left to right), but always doing the Division first (as the acronyms say) will get the correct answer.


What are the similarities and differences of east Asian arts?

East Asian arts include Buddhist, Chinese, Japanese, Korean, Tibetan, Thai, Laotian and Vietnamese art. One of the main similarities of east Asian arts is their depiction of Buddha. Buddhism features prominently in most of these cultures and therefore their art. Calligraphy is a common artform in China as well as Vietnam. Differences are seen in the types of mediums they use. Japan is known for woodblock prints, whereas Thai art is typically seen in the ornamentation of buildings.