D4) 9=2.25x
I wasn't taught decimals in pre-algebra yet. I know decimals, but just not in these type of problems
9=2.25x
Divide 9 by 2.25
9/2.25 = 4
x = 4
if ice cream cones cost $2.25 , how many could you buy with $9?
No worries! I can help you understand how to solve this equation involving decimals. Let's break it down step by step.
1. The equation you have is: 9 = 2.25x.
2. The goal is to find the value of x that makes the equation true.
3. To start, you need to isolate the variable x by itself. In this case, you want to get rid of the 2.25, which is being multiplied by x.
4. To undo the multiplication of x by 2.25, you can divide both sides of the equation by 2.25. This will eliminate the decimal and leave you with x on one side.
- Divide both sides of the equation by 2.25: 9/2.25 = (2.25x)/2.25.
5. Simplify the equation:
- On the left side, 9 divided by 2.25 equals 4.
- On the right side, (2.25x) divided by 2.25 is just x (since dividing by itself cancels out).
- Now the equation becomes: 4 = x.
So, the solution to the equation is x = 4. The value of x that makes the equation 9 = 2.25x true is 4.
Remember, when faced with a decimal in an equation, you can eliminate it by dividing both sides of the equation by that decimal. This allows you to isolate the variable and find the solution.