Answer:
-8, 7
Step-by-step explanation:
Set up an equation.
<em>x² + x = 56</em>
Set the equation equal to zero and factor.
<em>x² + x - 56 = 0</em>
<em>(x + 8)(x - 7) = 0</em>
Solve for x.
<em>x + 8 = 0</em>
<em>x = -8</em>
<em>x - 7 = 0</em>
<em>x = 7</em>
The possible x values are -8 and 7.
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
One feet is equal to 12 inches, so if we multiply 12 x 6 the answer is 72. So 72 inches equal 6 feet.
Each friend would get 5/4 of it or 1 1/4.
Answer:
All of the options
Step-by-step explanation:
Did it KA