Anyone know how to rearrange to make x the subject a = 4x/t - p
MW says that t/4(a+p) is wrong
Original post by CodenamedoIphin
MW says that t/4(a+p) is wrong
so you have and you want to rearrange to get x?
OR is it ?
You need to clarify / use some brackets!
What's the 1st step to carry out?
It’s
4x
— — P
t
4x
— — P
t
Original post by CodenamedoIphin
It’s
4x
— — P
t
4x
— — P
t
Have you tried
x = t(a+p)/4
assuming its
(edited 10 months ago)
Original post by mqb2766
Have you tried
x = t(a+p)/4
assuming its
x = t(a+p)/4
assuming its
Yes, told it’s wrong
Original post by CodenamedoIphin
Yes, told it’s wrong
Can you upload a pic of the question.
As a general rule, to check a sum like this. Take your original and choose a set of number for the variables. Small easy numbers but best avoid zero or 1.
So here we could choose
which gives us
Now, we know that so use the same set of numbers in the 'x' formula
3 was our value for x. If your rearrangement was wrong, this agreement (x=3) would be very unlikely.
The fact that the start and end agree, indicates that your answer is probably correct.
If a teacher told you the answer was wrong (unlikely) then I am afraid that they are wrong. If it a computer marked assignment then they are never perfect.
So here we could choose
which gives us
Now, we know that so use the same set of numbers in the 'x' formula
3 was our value for x. If your rearrangement was wrong, this agreement (x=3) would be very unlikely.
The fact that the start and end agree, indicates that your answer is probably correct.
If a teacher told you the answer was wrong (unlikely) then I am afraid that they are wrong. If it a computer marked assignment then they are never perfect.
(edited 10 months ago)
Original post by j3ssica jon3s
x= a(t-p)/4
how did you get to that?
Original post by nerak99
If a teacher told you the answer was wrong (unlikely) then I am afraid that they are wrong. If it a computer marked assignment then they are never perfect.
If a teacher told you the answer was wrong (unlikely) then I am afraid that they are wrong. If it a computer marked assignment then they are never perfect.
I think the OP is referring to Mathswatch which seems to be notoriously fussy about layout, even when you have the correct answer
@davros sorry i got confused by OP's lack of brackets... im getting what mqb2766 got.
(edited 10 months ago)
Original post by nerak99
Well
Please read the rules - we do not post solutions
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