Answer:
Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x
Thus, option A) is true.
The solution to the system of equations be:
![x = 4, y = 5](https://tex.z-dn.net/?f=x%20%3D%204%2C%20y%20%3D%205)
Step-by-step explanation:
It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.
Given the system of equations
![x - y = -1](https://tex.z-dn.net/?f=x%20-%20y%20%3D%20-1)
![2x - y = 3](https://tex.z-dn.net/?f=2x%20-%20y%20%3D%203)
Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x
![x-y=-1](https://tex.z-dn.net/?f=x-y%3D-1)
Add y to both sides
![x-y+y=-1+y](https://tex.z-dn.net/?f=x-y%2By%3D-1%2By)
![x=-1+y](https://tex.z-dn.net/?f=x%3D-1%2By)
Thus, option A) is true.
<u>NOW LET US SOLVE THE REMAINING PORTION</u>
to solve for y
![\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}](https://tex.z-dn.net/?f=%5Cbegin%7Bbmatrix%7D2%5Cleft%28-1%2By%5Cright%29-y%3D3%5Cend%7Bbmatrix%7D)
![-2+y=3](https://tex.z-dn.net/?f=-2%2By%3D3)
![y=5](https://tex.z-dn.net/?f=y%3D5)
For x = -1 + y
substitute y = 5
![x=-1+5](https://tex.z-dn.net/?f=x%3D-1%2B5)
![x=4](https://tex.z-dn.net/?f=x%3D4)
Thus, the solution to the system of equations be:
![x = 4, y = 5](https://tex.z-dn.net/?f=x%20%3D%204%2C%20y%20%3D%205)
Answer:
x = 8^3
Step-by-step explanation:
To rewrite an equation with logs in exponential form, you need to know
logb(a) = m is equivalent to a= b^m
So given log8 (x) = 3 is equivalent to x = 8^3
Answer:
d1=-1/2,d2=1/2
Step-by-step explanation:
hope this helps
Answer:
Step-by-step explanation:
Answer:
Answer is D (2 drinks and 5 hotdog's)
Step-by-step explanation: 1st answer is over as it is $19.25 for only the hotdogs. 2nd is $18.50 which is a little over. 3rd one is $22.25. And the forth one is $16.75 which is perfect because he cant buy anything else with the remainder of his money.