Determine whether the following statement makes sense or

2022-03-03 Answered
Determine whether the following statement makes sense or does not make sense, and explain your reasoning.I solved a formula for one of its variables, so now I have a numerical value for that variable.
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Answers (1)

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Answered 2022-03-19 Author has 208 answers

1. Solving a formula for one of its variables mean there are more than oone variable.

We cannot solve a variable from a single multivariable equation

2x+4y=9

if we solve eqither x or y we wolud not get a numerical value.

 

2. Statement makes sense. 

Let us take 2x+4y=9

Solving for x and y gives

x=9-4y2      y=9-2x4

 

3.  Statement makes sense.

By solving for a variable, we can use that value of variable (substitute) in later steps of a problem.

 

4. Makes sense.

Let us take an example

4x-3=9  (1) 4x=9+3 4x=12 x=3

Plug x=3 in (1)

4(3)-3=9  12-3=9,   9=9   9-9=0

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