xXy = 98
x+y = 21
i think..
when you multiply 2 numbers you get 98, when you add them you get 21
whats the y=bla equation for this simple problem
-W
xXy = 98
x+y = 21
i think..
The only thing we have to fear; is fear itself.
How does it change many dyslexics to take a light-bulb?
http://www.somethingwhacked.com
xy = 98Originally Posted by Wojtek
when you multiply 2 numbers you get 98, when you add them you get 21
whats the y=bla equation for this simple problem
x + y = 21
y = 21 - x, thus
x(21 - x) = 98
21x - x^2 = 98 -> x^2 - 21x + 98 = 0
factored:
(x - 14)(x - 7) = 0
x = 14, 7
and thus:
with x = 14 -> y = 21 - 14 = 7
with x = 7 -> y = 31 - 7 = 14
Answers are x = 14, y = 7 and y = 7 and x = 14
a t l a s
I just guessed and checked. Atlas did it the smart way.
I love guess and check, but now that I am beyond calculus it doesn't usually work
sometimes i guess on those integral problems where you have to find the volume of an irregular object. it is fun but i get 17s and 26s on my quizzes.
frosted windows everyday make me see jesus
How is this "silly"?
because it was easy to figure out .......... for smart people
btw, tnx atlas, exactly what i needed
-W
Is this your homework, Wojtek?
since college kicked me out im doing some homeschooling to catch up.
not exactly my 'homework' but part of the exercises i gotta do
-W
Wow... I remember doing that crap...
O I am so very glad Im not in skool anymore!
bah, screw you all.. i remember doing that last year.. wasn't hard.. just had to waste so much time doing it >_<
No wonder you got kicked out...(no offense, really)
Ouch, that was brutal lex
If you dig this forum, you'll learn I failed Russian.
And since russian lvl1 wasnt available in the next semester I could not sign up for the next semester, thus, had to stay home.
Stupid college policies.
But, college here in quebec isnt the same as college in the states.
We have:
6 years grade school
5 years high school
2 or 3 years of college (3 career, 2 pre-university)
3+ years of university
-W
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