dlr1628
16.10.2020 •
Mathematics
A six pack of soda is on sale
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Ответ:
that is not complete you would need the starting price and the percentage
hope that helps good luck
Ответ:
what's the question?
Step-by-step explanation:
i dont know cz u didnt put the question n only a lil bit of information
Ответ:
x(x+4) = 21, or x²+4x-21 = 0
Explination: The area of a rectangle is given by multiplying the length and width of the rectangle. We know that the length is 4 more than the width; if x represents the width, this means that the length is x+4.
The area would then be x(x+4). We know that the area equals 21; this gives us the equation
x(x+4) = 21
Using the distributive property, we have
x(x)+x(4) = 21
x²+4x = 21
To write in standard form, subtract 21 from each side:
x²+4x-21 = 21-21
x²+4x-21 = 0