Answer:
1. x² + 3x - 5 = 0
2. x² - x = 3 x + 7
4. 7x² + 14x = 0
Step-by-step explanation:
A Quadratic equation takes the form;
ax² + bx + c = 0
a, b, c are constants and a cannot be 0.
Options 1 fits this;
x² + 3x - 5 = 0
Option 2 fits this as well;
x² - x = 3 x + 7
x² -x - 3x - 7 = 0
x² - 4x - 7 = 0
Option 4 fits this as well if c = 0.
7x² + 14x + 0 = 0
Answer: The total cost of 15 carnival tickets=$37.50
Step-by-step explanation:
We are given that ,
The equation 
represents the total cost of buying buying carnival tickets , where x= Number of carnival tickets and y= Total cost.
To find : The cost of 15 carnival tickets.
In the given equation , we substitute the value of x = 15 we get
Thus , According to the equation, the total cost of 15 carnival tickets= $ 37.50
Hence , the correct answer is $ 37.50 .
Answer:
A. 1200
Step-by-step explanation:
Since 10 times 3 is 30, then 400 times 3 is 1200. Hope I helped!
Answer:
Answer: 42.5
Step-by-step explanation:
It says 1 inch equals 5 feet. So, every inch is on the map is an extra 5 feet in real space. So if you think about it, all this is is a simple multiplication problem.
Here is the math:
8.5 * 5 = 42.5
Think about it, for every inch there is on the map there is an extra 5 feet in real space. There is 8 inches, so we need 5 extra feet for each of those 8 inches. So what we get for 1 inch is 5 feet, for 2 inches 10 feet, 3 inches 15 feet, etc etc until we reach 8 inches. For the 0.5 inches alone that would equal 2.5 feet in real life since 1 inch is 5 feet.
Ez pz
I think they are at 7:10 pm
