B
Because first “reduce” both sides of the top equation by the same to simplify it. See what both sides have in common.
They both have 3 long rectangles and 2 Sm. Squares.
That leaves, 2 long rectangles = 6 squares.
Which means that each long rectangle = 3 squares
Answer:
9=3+11
Step-by-step explanation:
Answer:
2 dollars each I think........
Answer:
System of equations: ![\left \{ {{3b+5s=2.31} \atop {5b+3s=3.05}} \right.](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B3b%2B5s%3D2.31%7D%20%5Catop%20%7B5b%2B3s%3D3.05%7D%7D%20%5Cright.)
A bar soap costs $0.52 and a sponge costs $0.15
Step-by-step explanation:
Let be "x" the cost in dollars of a bar of soap and "y" the cost in dollars of a sponge.
Based on the information given in the exercise, you can set up the following system of equations:
![\left \{ {{3x+5y=2.31} \atop {5x+3y=3.05}} \right.](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B3x%2B5y%3D2.31%7D%20%5Catop%20%7B5x%2B3y%3D3.05%7D%7D%20%5Cright.)
You can use the Elmination method to solve the system of equations:
1. Multiply the first equation by -3 and the second one by 5.
2. Add the equations.
3. Solve for "x".
Then:
![\left \{ {{-9x-15y=-6.93} \atop {25x+15y=15.25}} \right\\........................\\16x=8.32\\\\x=0.52](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B-9x-15y%3D-6.93%7D%20%5Catop%20%7B25x%2B15y%3D15.25%7D%7D%20%5Cright%5C%5C........................%5C%5C16x%3D8.32%5C%5C%5C%5Cx%3D0.52)
4. Substitute the value of "x" into any original equation and solve for "y":
![3(0.52)+5y=2.31\\\\5y=2.31-1.56\\\\5y=0.75\\\\y=0.15](https://tex.z-dn.net/?f=3%280.52%29%2B5y%3D2.31%5C%5C%5C%5C5y%3D2.31-1.56%5C%5C%5C%5C5y%3D0.75%5C%5C%5C%5Cy%3D0.15)
If you follow the steps of PEMDAS it should be Multiply by 3,subtract 2.