Answer:
Step-by-step explanation:
x=-15
The aim here is to get all of the terms involving x on one side of the equation and then to get x by itself.
We can start by subtracting 6 from both sides.
This gives:
4x = 32
We can then divide both sides by 4 to get x by itself:
x = 32/4 = 8
Answer:
a = ![\frac{6}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7B5%7D)
Step-by-step explanation:
Given
ai + bj and 5i - 2j are perpendicular and b = 3, that is
ai + 3j and 5i - 2j are perpendicular, then
The scalar product = 0 , that is
5a - 6 = 0 ( add 6 to both sides )
5a = 6 ( divide both sides by 5 )
a = ![\frac{6}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7B5%7D)
Answer:
20
Step-by-step explanation:
To solve this question we can use a system of linear equations. The 2 equations should represent- 1) the number of total tickets sold and 2) the total amount raised. So, the two equations look like this (in this situation, let x stand for the cheaper tickets and y for the more expensive ones).
Then, there are multiple ways to solve this including graphing, elimination, and substitution. In my opinion, substitution is the best for this situation.
Firstly, isolate the y variable in the first equation
Next, plug in this value for y in the second equation
Then, solve this equation algebraically
Since x stands for the cheaper tickets, we know that 20 people bought the cheaper tickets.
Answer:
=12
hope that helped you:)
please make my answer brainiest as im trying get 4 brainiest answers