Answer:
B - 4
Step-by-step explanation:
Okay let's write this out. 3z+a=10, where Zoey and Ayden are z and a respectively. a=2z
We can further simplify by substtitition.
3z+2z=10
5z=10
3(2) + a = 10
6+a=10
a=4
Please brainliest.
Answer:
The most simple method for solving systems of equations is to transform one of the equations so it allows for the canceling out of a variable. In this case, we can multiply \displaystyle 3x + y = 8 by to get . Then, we can add \displaystyle 2x + 4y = 12 to this equation to yield , so .
Step-by-step explanation:
17 give or take a few lemons
So the “certain number” will be S.
Since 2width + 2length, the first part would be 2 times 2 which is 4
The length is S - 3
We then have to multiply this by 2
So it is 2(S-3) which is 2S-6
So the answer is 4+2S-6 which is 2S-2