The value of x is equal to -5/6
To solve this question, we have to add two polynomials together. The polynomials are;
<h3>Addition of Polynomials</h3>
This involves adding of two or more different polynomials together. The polynomials adding together are or must be of the same degree. i.e x^2 must add to another coefficient of x^2 and x^3 adds to another coefficient of x^3 and so on.
In this given question, let's add the polynomials together.
Now, let's equate this with the last polynomial given
Let's solve for x
The value of x is equal to -5/6
Learn more on addition of polynomials here;
brainly.com/question/4142886
4/8 + 3/8 = 7/8
or 1/2+3/8=7/8
0.5+0.375=0.875
Isolate for x
First expand the bracket to
12x^2 - 15x = 12x - 5
Move everything to one side
12x^2 - 27x + 5
Use quadratic formula and sub in values
X = 2.046989
X = 0.203610
I'm not sure if you were supposed to add two numbers together to get five? If that's the case the answer would be 5/3. If it's not i'm sorry, I tried.
Seeing as they’re asking us only the total amount of ribbon (not the amount of just red or just yellow ribbon), all we have to do is add these two together.
512+212 = 724, so she used 724ft of ribbon in total (red + yellow). (I really don’t know why she would need that much, but hey, that’s her business, I guess :) )