Giabear23
01.07.2019 •
Mathematics
If the selling price of an item is $65 and the dollar markup is $12 how much is the markup percentage
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Ответ:
I'm pretty sure the answer is 33.33%
Ответ:
B.
Step-by-step explanation:
If you simplify both sides and you have both sides in the form, , if the the number in front of the variable, is the same while the constant number, , is different then you will have no solutions.
If you have same and same , then you have infinitely many solutions.
If you have different then you have one solution.
Let's simplify both sides of A:
Distribute:
Combine like terms on left hand side:
The left hand side and right hand side have the same value no matter the x. This has infinitely many solutions.
Let's simplify both sides of B:
Distribute:
Combine like terms on either side:
This is going to have no solutions. If you thought about graphing y=4x+11 and y=4x+3 you would see that they are parallel and never cross.
You could also try and solve it.
Subtract 4x on both sides:
11 is never 3.
11 isn't 3.
11=3 is not true which means there is no satisfying the equation labeled B.
Let's simplify both sides of C:
Distribute:
Combine like terms on either side:
This is going to have one solution.
We can solve it and see.
Subtract 4x on both sides:
Subtract 15 on both sides:
Divide both sides by 2:
0 is the one number that will make both sides the same for equation C.
Let's simplify both sides of D:
Distribute:
Combine like terms on left hand side:
These are the exact same expression on both sides and therefore will have the same value no matter the value of x you choose to plug in.
There are infinitely many solutions.