Ok here is how you do this:
you need to replace y with 20 and then solve to find x, i.e. solve this equation
20=2/5x
1. Simplify 2/5x to 2x/5
20=2x/5
2. Multiply both sides by 5
20 * 5=2x
3. Simplify 20 * 5 to 100
100=2x
4. Divide both sides by 2
100/2=x
5. Simplify 100/2 to 50
50=x
6. Switch sides
x=50
so your answer is B. 50
I hope this helped!
<span>the answer is 54.1666666666667% hope this helps
</span>
Answer:
$50.85.
Step-by-step explanation:
We have been given that Jessica's Furniture Store buys a couch at a wholesale price of$113.00. The markup rate at Jessica's Furniture Store is 45%. We are asked to find the markup for the couch.
To find the markup for the couch, we need to calculate 45% of $113.00.
![\text{Markup for the couch}=\$113.00\times \frac{45}{100}](https://tex.z-dn.net/?f=%5Ctext%7BMarkup%20for%20the%20couch%7D%3D%5C%24113.00%5Ctimes%20%5Cfrac%7B45%7D%7B100%7D)
![\text{Markup for the couch}=\$113.00\times 0.45](https://tex.z-dn.net/?f=%5Ctext%7BMarkup%20for%20the%20couch%7D%3D%5C%24113.00%5Ctimes%200.45)
![\text{Markup for the couch}=\$50.85](https://tex.z-dn.net/?f=%5Ctext%7BMarkup%20for%20the%20couch%7D%3D%5C%2450.85)
Therefore, the markup for the couch would be $50.85.
The polynomial a,b,c,are not perfect square polynomial and the polynomial d is perfect square polynomial.
The given polynomial is
![a) 36x^2-4x+16](https://tex.z-dn.net/?f=a%29%2036x%5E2-4x%2B16)
What is the form of perfect square polynomial?
![(ax+b)^2](https://tex.z-dn.net/?f=%28ax%2Bb%29%5E2)
we solve this method by using perfect square method
add and subtract 1/9
![36x^2-4x+16+\frac{1}{9}-\frac{1}{9}](https://tex.z-dn.net/?f=36x%5E2-4x%2B16%2B%5Cfrac%7B1%7D%7B9%7D-%5Cfrac%7B1%7D%7B9%7D)
factor 36
![\frac{143}{9}+36(x^2-\frac{x}{9}+\frac{1}{324} )](https://tex.z-dn.net/?f=%5Cfrac%7B143%7D%7B9%7D%2B36%28x%5E2-%5Cfrac%7Bx%7D%7B9%7D%2B%5Cfrac%7B1%7D%7B324%7D%20%29)
Now complete the square
Therefore this is not perfect square trinomial.
Similarly for
![b) 16x^2-8x+36](https://tex.z-dn.net/?f=b%29%2016x%5E2-8x%2B36)
Complete square is,
![16(x-\frac{1}{4})^2+35](https://tex.z-dn.net/?f=16%28x-%5Cfrac%7B1%7D%7B4%7D%29%5E2%2B35)
This polynomial is also not perfect square trinomial.
![c) 25x^2+9x+4\\](https://tex.z-dn.net/?f=c%29%2025x%5E2%2B9x%2B4%5C%5C)
complete square is,
![25(x+\frac{9}{50})^2+\frac{319}{100}](https://tex.z-dn.net/?f=25%28x%2B%5Cfrac%7B9%7D%7B50%7D%29%5E2%2B%5Cfrac%7B319%7D%7B100%7D)
This polynomial is not perfect square trinomial.
![d)4x^2+20x+25\\](https://tex.z-dn.net/?f=d%294x%5E2%2B20x%2B25%5C%5C)
complete square is,
![(2x+5)^2](https://tex.z-dn.net/?f=%282x%2B5%29%5E2)
This polynomial is perfect square trinomial.
Therefore,
The polynomial a,b,c,are not perfect square polynomial and the polynomial d is perfect square polynomial.
To learn more about perfect square trinomial visit:
brainly.com/question/1538726
Answer: get smart
Step-by-step explanation: