can anybody help me with this problem? is pre-cacul

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can anybody help me with this problem? is pre-cacul

Mathematics
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  • R
Where is the problem?
i have a question, here it goes, A butcher's scale is accurate to within 0.05 pound. A sirloin steak weights 1.14 pounds on this scale. Solve the inequality: lx-1.14l<_0.05. What does the solution interval represent?
you know pre-cal?

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  • R
Some, thinking. the absolute value of the quantity x-1.14 must be less than ??? is that a -0.05????
|x-1.14| <_ 0.05 => -(x-1.14) <_ 0.05 or (x-1.14) <_ 0.05 solve it up!
no is 0.05
lfcmaniac,, what goes after your last step?
R, the inequality: is alraedy their, is given. lx-1.14l<_0.05
see what you now have is -x + 1.14 <_ 0.05 => 1.14 - 0.05 <_ x => 1.09 <_ x or x<_ 0.05-1.14 => x<_ -1.09 because of the negative sign the inequality gets reversed, => x _> 1.09 get that ?
oh yeah
why is the x negative? is the adsolute value
Worldboy, \[|x| => \pm x\] ?
what does the solution interval represents?
  • R
|x-1.14|<0.05 -0.05
the solution interval represents that x is any number greater or equal to 1.09
lfc you a teacher?
R
ther is a mistake, becuse is suppost to be <_, equal sign
is it going to be the same result, wih with the <_ sign?
the <_ is nothing but \[\le\] isn't it ? and no i aint a teacher, i am just a 12th grade student :P
yeah
  • R
Is the problem \[|x-1.14|\le0.05\]
nothing chnge much really,
i just need to change the c, to <-
maniac, how you did the sign, equal or greater?
may come handy in the future?
use the Equation button underneath the typing space my friend
equation button ?
never used it before
give it a try and you'll get the knack of it soon
where is the button?
?
you know R?
  • R
Click on the Equation and then you will get a separate box to enter equations and a menu of mathematical symbols, and operators.
thx
omg, i going save this site as my favorite, i am going help the people who i can help.
R, you help me with another problem, i am having problem?
  • R
Review this problem very carefully as I think there may be an error. I come up with the answer: 1.09
  • R
Yes, if I can.
yeah, i got the exact same thing
should i write it to 1.09<_x 1.19>_x
look rthe other problem i need help in, it goes like this i have a question i don't quite understand, i am preparing for a exam. A 100-gallon mixture of citrus extract and water is 3% citrus extract, and it needs to be diluted. The function f(x)=3/100+x represents the percentrage (in decimal form) of the miture that is citrus extract when x gallons of water are added. Find the domain of f(x). Then, find the percentage of citrus extract in the mixture after 50 gallons of water are added to it.
i think the prof gave me a problem silimiar to this, i going check my notes
  • R
O.K let me study it a bit
ok
  • R
I don't quite understand the function, but there is 100 gallons of mixture of which is 3% citrus or 3 gallons of citrus 97 gallons of water. It looks like they add 50 gallons of water (no more citrus) giving 150 gallolns of mixture of which only 3 gallons is citrus (since no more was added) So now the percerntage is 3/150 or only 2% citrus. Do you have the answer?
no
  • R
It appears the domain of x could be the set of real numbers. What bothers me is the function seems to have a constant of .03 rather than attaining a 3 % mixture. It has been over 30 years since I had Calculus and I need to brush up on it. I am afraid I am not too much help to you at this time WorldBoy
is ok.
you try
  • R
Good luck with your studies and this "test"

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