A)
145 - 5d
5d = 145, set equal
29 days to lay all the track
b)
5*19 = 95
145-95 = 50
After 19 days, they have 50 miles to go.
Answer:
First answer: "Add the exponents"
Step-by-step explanation:
The laws of exponents include the following for product of exponents with the same base:
![x^a\,*\,x^b = x^{a+b}](https://tex.z-dn.net/?f=x%5Ea%5C%2C%2A%5C%2Cx%5Eb%20%3D%20x%5E%7Ba%2Bb%7D)
which implies addition of exponents
So you need to add exponents
Si se puede distribuir el exponente de una suma porque si 2+3 elevado al 2 entonces el Raiz seria cuadrada de 19
For this case we have a direct variation of the form:
![y = kx ^ 2](https://tex.z-dn.net/?f=y%20%3D%20kx%20%5E%202)
Where,
- <em>k: proportionality constant
</em>
We must find the value of k.
For this, we use the following data:
![y = 36\\x = 3](https://tex.z-dn.net/?f=y%20%3D%2036%5C%5Cx%20%3D%203)
Therefore, replacing values we have:
![36 = k (3) ^ 2](https://tex.z-dn.net/?f=36%20%3D%20k%20%283%29%20%5E%202)
Rewriting:
![36 = 9k](https://tex.z-dn.net/?f=36%20%3D%209k)
Clearing the value of k we have:
![k = \frac {36} {9}\\k = 4](https://tex.z-dn.net/?f=k%20%3D%20%5Cfrac%20%7B36%7D%20%7B9%7D%5C%5Ck%20%3D%204)
Therefore, the direct variation equation is given by:
![y = 4x ^ 2](https://tex.z-dn.net/?f=y%20%3D%204x%20%5E%202)
Answer:
The quadratic variation equation for the relatonship is:
![y = 4x ^ 2](https://tex.z-dn.net/?f=y%20%3D%204x%20%5E%202)
Answer:
13+2+9=2+13+9
[29(14)]+45=[14(29)]+45
Step-by-step explanation:
I don't know it told me it was right