Answer:
Below.
Step-by-step explanation:
Homogeneous mixtures have just one phase - for example a mixture of methanol and water just look like one clear liquid.
Heterogeneous mixtures have more than one phase - for example a mixture of the insoluble salt barium sulphate and water; the salt is a white solid at the bottom of the flask.
The answer for your question is 0=-3
Divided the problem to get the answer
Answer:
![\$68](https://tex.z-dn.net/?f=%5C%2468)
Step-by-step explanation:
1. Approach
To solve this problem, one wants to find the price of a product after its discount has been applied. The discount is 20% off, so the new price of the item is 80% of its original price (percent is out of 100 so if a an item is 20% off, it is 100 - 20 = 80; 80% the original price). To calculate the percent cost, one would divide the percent value by 100, and then multiply it by the price of the item.
2. Solving
The price of the new item is 80% of the price of the original item. To calculate the percent cost, cent, one would divide the percent value by 100, and then multiply it by the price of the item.
Therefore, the equation that will be formed is,
![price * \frac{percent}{100}](https://tex.z-dn.net/?f=price%20%2A%20%5Cfrac%7Bpercent%7D%7B100%7D)
Substitute,
![85 * \frac{80}{100}](https://tex.z-dn.net/?f=85%20%2A%20%5Cfrac%7B80%7D%7B100%7D)
Simplify,
![85 * 0.8\\\\= 68](https://tex.z-dn.net/?f=85%20%2A%200.8%5C%5C%5C%5C%3D%2068)
Answer: 146 Tickets
Step-by-step explanation:
So, we need to write an equation first to be able to solve this problem.
The variables we will be using are x, which represents how many adult tickets were sold.
Because we know that the student tickets sold were two times the adult, we can label the student tickets as 2x.
Our equation will be x + 2x = 438
Because x and 2x can be added together, it will make 3x.
3x = 438
x= 146