please could someone help me answer this question??
y= 900a /
2 + a
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please could someone help me answer this question??
y= 900a /
2 + a
Do you want to make 'a' the subject of formula?
Yes
Ok, I'll tell you to multiply each side by a+2 first and let's see what you get.
I'll be guiding you till the answer. :)
THIS IS WHAT I GOT
2y + ay +900a
2y + 900a - ay
2y= (900-y)a
a= 2y/900-y
= 2y/900-2y/y
= y/450-2
this is the answer I got
2y + ay = 900a
2y = 900a - ay
Watch your "=" signs.
2y= (900-y)a
So far, so good. "a" is now the subject of the expression.
This is wrong. You can't simply put the numerator over each element of the denominator.
You could do this:
but I'm not sure why you'd want to do that.
Yes, leave it asthat's fine.
I did the equation like that as the question was:
A major chemical company researching crop yields tries out a new pesticide. The results indicate that, per hectare, for a kg of pesticide the extra yield y kg of a crop is given by the equation
the question was:
what is the formula which gives the amount, a kg, of pesticide needed to return and extra yield of y kg?
Yes, you leave it as said previously. :)
Thanks for your help :)
You're welcome! :)
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