my book shows me an equation with just variables and says to solve for the indicated variable...
heres a prob i need help with...
A=LW and the indicated variable to solve for is W....
Another one i don't understand is 4y+3x=5, and the indicated variable to solve for is X
PLZ HELP ME??
2007-01-11 15:31:38 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Thank you everyone so so so so so so much for the help!!!
2007-01-11 15:40:28 · update #1
You must be in Math 7. Sure.
Isolate the variable by undoing the order of operations.
For the first one, divide by L, since it is with the W.
So the answer is A/L = W
The second one, subtract 4y and divide by 3 to get x by itself:
x = (5 - 4y) / 3
Easy!
Now, I don't want to see any more of your homework questions here. Do them yourself!
2007-01-11 15:35:49 · answer #1 · answered by powhound 7 · 0⤊ 0⤋
A=LW
Dividing both sides by L, we get:
A/L = W or W=A/L answer.
4y+3x=5,
taking 4y to the other side, we get:
3x=5-4y. Now divide both sides by 3, we get: x=(5/3) -(4/3)y
2007-01-11 15:42:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Solve for W:
A/L=W
Solve for X:
(5-4y)/3 = X
2007-01-11 15:36:16 · answer #3 · answered by Anonymous · 0⤊ 0⤋
W=A/L
and do you mean X as in a different variable then the x in the given equation?
2007-01-11 15:35:49 · answer #4 · answered by batman123 2 · 0⤊ 0⤋
the second one i can do.
4y+3x=5 minus 4y from each side to get:
3x=5-4y then divide by 3 on both sides to get
x=3/5-4/3y
the first, i can try......
a=lw minus L from both sides and you get
W=A-L
2007-01-11 15:39:06 · answer #5 · answered by Anonymous · 0⤊ 0⤋
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2016-12-02 03:52:27 · answer #6 · answered by duperne 4 · 0⤊ 0⤋
The problems are just asking you to rearrange the equations so that you isolate the variable (all by itself, with no coefficient, on one side of equal sign).
Use rules of add-sub-mult-div to do this
2007-01-11 15:37:12 · answer #7 · answered by teachbio 5 · 0⤊ 0⤋
1st question..
A=LW
W=A/L
2nd question
4y+3x=5
3x=5-4y
x=(5-4y)/3
done!
2007-01-11 18:16:05 · answer #8 · answered by Ms. M 3 · 0⤊ 0⤋