what does F=(5/9) mean. Is the 5/9 a division sign?
148442
Yes, the 5/9 is 5 divided by 9.\n\nTo convert Celsius to Fahrenheit:\n\nC x 9/5 + 32 = F\n\nTo convert Fahrenheit to Celsius:\n\n(F - 32) x 5/9 = C
88674
F = 9/5 * C + 32\n\nF = C\n\nSolving, gives F = C = -40
633611
You need to check the glossary of the text you are using.\n\nSome writers invent their own symbols. In this case, I would guess, from your remarks, that the symbol means "the first derivative of the function f(x)".\n\nIn some calculus texts, the symbol used is f '(x),\n\n read "f -prime of x, or "the first derivative of f(x)".\n\nHope that helps!
560559
9 and 4/10\n9 and 2/5\n47/5
626286
I *nearly* agree with the previous answer.  However,\nsince the question asked about *dividing*, you\nshould convert the two numbers to fractions,\nand then multiply the first fraction by the\n*reciprocal* of the second fraction.\n\n1 9/17 = 26/17\n2 3/5 = 13/5\n\n(26/17) / (13/5) = (26/17) * (5/13) = 10/17
996040
Here is a cool trick. When you divide any number(smaller than 9) by 9, or mulitple nines, the answer is a repeating decimal using that very number, following the number of 9's in the divisor.\nExample: 1/9= .11111...\n2/9= .22222...\n2/99 = .02020202...\nThe more 9's the bigger the repeating sequence.\nYour example has 5 9's, so the sequence is 5 spaces, ending with one:\n1/99999 = .000010000100001...\n(Just following suit):\n2/99999 would equal .0000200002...
589883
Maybe you would like to know how to figure it....\n\nall natural numbers need to be on one side of the equals sign,soooo...\n\nto move the 5 over, subtract 5 from both sides...so now it should look like\n4x+5-5= 9-5   then it looks like\n\n4x=9-5   get it? Then \n\n4x=4    now you need the x by itself, so you divide both\n        sides by 4\n\n4x/ 4 = 4/4  \n\nx=1\n\nhope this helps with future problems
801052
It seems you are asking for f'(2)?  in which case, we have\nf'(x) = 1/(1+x^4)so that f'(2) = 1/9\n\nSteve
890821
aka the lens formula, I think you mean 1/s'=1/f-1/s where, unless there are parenthesis to tell you what to do first, division is done before subtraction. Your answer violates the rules of algebra. To invert both sides you get:\ns'=1/(1/f-1/s) which is a compound fraction. To make a simple fraction, multiply by 1=fs/(fs). You then get:\ns'=fs/(s-f)
1005272
f(4) means 'rewrite f(x) = 2x - 5 with a "4" instead of an "x"', like this:\n\nf(4) = (2 * 4) - 5\n=8 - 5\n=3
184547
Remember, multiplication is commutative. 25/9 = 25*(1/9) and (25/9)^2 is shorthand for (25/9)*(25/9) = 25*(1/9)*25*(1/9). Commutativity tells us that we can move around the numbers in the multiplication above, so we rearrange to form 25*25*(1/9)*(1/9) = 25^2*(1/9)^2 = (25^2)/(9^2).\nIn the future, just remember that if you have a fraction a/b, then (a/b)^n = (a^n)/(b^n). \nDivision and multiplication are very comfortable each other, as they are essentially the same operation.\nExplore the page in the source for any more questions you might have.
883154
I assume that's suppose to be an integral symbol.\n\nf(x) = [1/2 t²] from 2 to x, or 1/2 x² - 1\n\nThen f'(x) = x, and f''(x) = 1.\n\nDidn't really need to do the integration...
955186
Signs change when you multiply by a negative number -- but do not change when you multiply by a positive number.\n\nDivision is just multiplication by the inverse -- so the same rules apply.\n\nYou do not change the sign when you divide by five.  But you would change it is you divided by (-5).
975612
All the information you need is there - you just need to convert the information into an equation.\n"Difference" means subtract, right?\n"5 times a number" is 5 multiplied times an unknown number, which is usually shown as an "X".\n"4" is given.\n"is" means "=".\n\nPut it all together:\n\n5X - 4 = 16\n\nNext step is to solve for "X" by getting all of the known information on the right side of the "=" sign, so:\n\nadd "4" to each side of the equation: 5X - 4 + 4 = 16 + 4 so that 5X = 20\n\nNow divide each side of the equation by "5":  5X/5 = 20/5 so that\nX = 4
235381
in dividing fractions, you just multiply them by its reciprocal.\n\nso \n\n[(x+5) / (16x)]  * [ (4x ^2) / [(3x -2)] \n\nperform the operations: \n\n[ (x+5) / 4 ] * [ x / (3x-2) ]\n\nthe answer is:\n\n[x(x+5)] / [ 4(3x-2) ]
1086560
f(-2) = 5. What's so difficult about this question?
1134068
No, \nfor f(x)=(x+5)/(x-9), you substitute 1 for x, then solve for f(x) to obtain the y-value at x=1. So:\n\n                                 f(1)=((1)+5)/((1)-9)= -6/8\n\n                               which shows that at x=1, y= -6/8 = f(1)\n\nThe point (1, -5/9) is not on the graph.