No
A law is proven, and will always remain to be true.
A theory has not been proven.
Alright! I've seen quite a few of these so I thought I'd get them out of the way and help you out! :).
Direct variation is simple. The formula you'll use to find the constant K is as follows:
y = kx
Once you've established your formula you simply plug in:
.3 = (k)(.6)
Then you solve for k by dividing both sides by (.6) thus getting:
(.3/.6) = k OR (1/2) = k
Your direct variation equation is your standard formula with only K plugged in:
y = (1/2)x
2 9/10 in decimal form would be,

if you have any other questions like this,
let me know ill help you!!
Answer:
no solution
Step-by-step explanation:
- Therefore, there is actually no solution! No solution of x, when added to 1, can make negative 4. This is because the absolute sign (the symbol that looks like bars: |#|) automatically makes a number positive.
We have a square garden of 400 square foot.
The area of a square is:

where x: side length.
In this case:
![\begin{gathered} A=400=x^2 \\ x=\sqrt[]{400}=20\text{ ft} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20A%3D400%3Dx%5E2%20%5C%5C%20x%3D%5Csqrt%5B%5D%7B400%7D%3D20%5Ctext%7B%20ft%7D%20%5Cend%7Bgathered%7D)
The perimeter of the square is the sum of the lengths of the sides of the square. As they are all equal, we can write:

The fencing is priced at $1.50 per foot. If we add the 7% sales tax to this price we get:

The fencing will be installed in all the perimeter (80 ft).
We can calculate the total cost by multiplying the sales price ($1.605 per foot) and the perimeter (80 ft):

Answer: the fencing will cost a total of $128.40