Answer:
Yah, it can as long as it has three sides
Answer:
The required system of equations is:
![m+f = 30\\m = f+4](https://tex.z-dn.net/?f=m%2Bf%20%3D%2030%5C%5Cm%20%3D%20f%2B4)
Step-by-step explanation:
First of all, the variables have to be selected to represent the quantities.
Let m be the number of male friends and let f be the number of female friends.
Then according to first statement "John has 30 friends"
![m+f = 30\ \ \ \ Eqn\ 1](https://tex.z-dn.net/?f=m%2Bf%20%3D%2030%5C%20%5C%20%5C%20%5C%20Eqn%5C%201)
And according to second statement "amount of male friends is 4 more than the number of female friends."
![m = f+4\ \ \ \ Eqn\ 2](https://tex.z-dn.net/?f=m%20%3D%20f%2B4%5C%20%5C%20%5C%20%5C%20Eqn%5C%202)
Hence the required system of equations is:
![m+f = 30\\m = f+4](https://tex.z-dn.net/?f=m%2Bf%20%3D%2030%5C%5Cm%20%3D%20f%2B4)
Answer:
The cost of lemons
Step-by-step explanation:
This is because the cost of lemons depends on the amount of lemons purchased.
Answer:
20
Step-by-step explanation:
To make these parallel, 2 and 5 would have to be corresponding angles, meaning that they have equal angle measure:
3x-20=x+20
3x=x+40
2x=40
x=20
Hope this helps!
Answer:
<h3> A.
![\bold{a_n=-3\cdot\left(\frac18\right)^{n-1}}](https://tex.z-dn.net/?f=%5Cbold%7Ba_n%3D-3%5Ccdot%5Cleft%28%5Cfrac18%5Cright%29%5E%7Bn-1%7D%7D)
</h3>
Step-by-step explanation:
![\begin{cases}a_1=-3\\a_n=a_{n-1}\cdot\dfrac18\end{cases}\\\\\\a_2=a_{2-1}\cdot\frac18=a_1\cdot\frac18\\\\r=\dfrac{a_2}{a_1}=\dfrac{a_1\cdot\frac18}{a_1}=\dfrac18\\\\\\a_n=a_1\cdot r^{n-1}\\\\a_n=-3\cdot\left(\frac18\right)^{n-1}](https://tex.z-dn.net/?f=%5Cbegin%7Bcases%7Da_1%3D-3%5C%5Ca_n%3Da_%7Bn-1%7D%5Ccdot%5Cdfrac18%5Cend%7Bcases%7D%5C%5C%5C%5C%5C%5Ca_2%3Da_%7B2-1%7D%5Ccdot%5Cfrac18%3Da_1%5Ccdot%5Cfrac18%5C%5C%5C%5Cr%3D%5Cdfrac%7Ba_2%7D%7Ba_1%7D%3D%5Cdfrac%7Ba_1%5Ccdot%5Cfrac18%7D%7Ba_1%7D%3D%5Cdfrac18%5C%5C%5C%5C%5C%5Ca_n%3Da_1%5Ccdot%20r%5E%7Bn-1%7D%5C%5C%5C%5Ca_n%3D-3%5Ccdot%5Cleft%28%5Cfrac18%5Cright%29%5E%7Bn-1%7D)