Answer:
Step-by-step explanation:
A polynomial is a perfect square if has the form:
![a^2+2ab+b^2](https://tex.z-dn.net/?f=a%5E2%2B2ab%2Bb%5E2)
Its factored form is
.
We can obtain examples by taking any value of a and b.
For example:
anb
.
Thus we obtain a polynomial that is a perfect square:
![x^2+2(x)(2y)+(2y)^2=x^2+4xy+4y^2](https://tex.z-dn.net/?f=x%5E2%2B2%28x%29%282y%29%2B%282y%29%5E2%3Dx%5E2%2B4xy%2B4y%5E2)
We can see that as the number of hours increase the charge also increase
Let x be the number of hours
The function denoting the scenario for Celeste
f(x)=![5+7.25x](https://tex.z-dn.net/?f=%205%2B7.25x%20)
The function denoting the scenario for Dora
g(x) = ![10.25+6.5x](https://tex.z-dn.net/?f=%2010.25%2B6.5x%20)
Now we need to know the time or number of hours x, when both the functions will give us the same value , that is f(x)=g(x)
![5+7.25x=10.25+6.5x](https://tex.z-dn.net/?f=%205%2B7.25x%3D10.25%2B6.5x%20)
![7.25x-6.5x=10.25-5.00](https://tex.z-dn.net/?f=%207.25x-6.5x%3D10.25-5.00%20)
![0.75x=5.25](https://tex.z-dn.net/?f=%200.75x%3D5.25%20)
![x=\frac{5.25}{0.75}](https://tex.z-dn.net/?f=%20x%3D%5Cfrac%7B5.25%7D%7B0.75%7D%20%20)
x=7
Hence at 7 hours of instruction both the instructors will get the same cost
B) Tautology
(ihavenoideawhattheanswerisbutpleasespareme)
Answer:
Hey there!
This is not a valid experiment because the sunshine each section received were not equal.
Let me know if this helps :)
Answer:
$13.50 Per Hour
Step-by-step explanation:
We find the unit rate by dividing it to the number of hours at work
$54/4 = $13.50
The answer will be $13.50 per hour