The answer is 1/5
hope this helps...
Answer:$43.69
She is incorrect. The mistake she made was adding $9.5 instead of taking 9.5% from the $39.90 and adding it to the initial total. The correct answer is actually $43.69. To find sales tax add your two starting prices and simply find the percent your looking for and add it to the original total
Answer:
Step-by-step explanation:
The four steps of linear combination method are
1) Rearrange like terms such that they are in the same column.
2) The next step is to decide on which variable you want to eliminate and multiply each row with suitable numbers that would make the coefficient of the variable to be equal and opposite.
3) Add both rows and solve for the other unknown variable.
4) substitute the known variable into any of the equations and solve for the other variable.
4x + 2y = 5
−4x − 5y = 7
We would eliminate x by adding both equations. It becomes
- 3y = 12
y = 12/- 3 = - 4
Substituting y = - 4 into the first equation, it becomes
4x + 2 × - 4 = 5
4x - 8 = 5
4x = 5 + 8 = 13
x = 13/4 = 3.25
