Answer:
1.4650 (the first option in the list of possible answers)
Step-by-step explanation:
Start by isolating the exponential expression on one side of the equal sign, thus subtracting 2 from both sides:
![2+3^x=7\\3^x=7-2\\3^x=5](https://tex.z-dn.net/?f=2%2B3%5Ex%3D7%5C%5C3%5Ex%3D7-2%5C%5C3%5Ex%3D5)
Now, in order to solve for "x", we need to lower the exponent, and for that purpose we use logarithm base "3":
![3^x=5\\x=log_3(5)](https://tex.z-dn.net/?f=3%5Ex%3D5%5C%5Cx%3Dlog_3%285%29)
In order to find this logarithm, we use the change of base formula:
![log_3(5)=\frac{log(5)}{log(3)} =1.46497...](https://tex.z-dn.net/?f=log_3%285%29%3D%5Cfrac%7Blog%285%29%7D%7Blog%283%29%7D%20%3D1.46497...)
which rounded to four decimals gives: 1.4650
(12,-1) or x=12 and y=-1
EXPLANATION:
you set both equations equal to each other by subtracting the sum and adding it to the equation. once you set them equal to eachother (x-2y-14=x+3y-9)
you can solve by moving everything to one side by subtracting. once you get it all to one side you can start adding common numbers and variables and solve
Answer:
Ghuyhhhh bhunbb
Step-by-step explanation:
Answer:
$0.17
Step-by-step explanation: