Take one of the 'x's in the table.
Write it in place of 'x' in one of the choices.
See if it produces the 'y' in the same choice.
It will only do that in one of the choices.

This is exactly how you check your solution to an equation
to see whether it works.

6 0

3 years ago

Use addition to solve the linear system of equations. Include all of your work in your final answer.

love history [14]

We have that
<span>x - y = 4-------> multiply by -1-----> -x+y=-4-----> equation 1
x+ 2y = 4------> equation 2

add equation 1 and equation 2
-x+y=-4
x+2y=4
-----------------
0+3y=0-----> y=0
x+2y=4------> x+0=4------>x=4

the solution is the point (4,0)</span>

4 0

3 years ago

Express (a+b) ^2 -4 by factorization

NemiM [27]

Step-by-step explanation:

$= (a + b) {}^{2} - 2 { }^{2} \\ = ( a + b + 2)(a + b - 2)$

in 2nd exp. this is because by using the formula of a2-b2

5 0

3 years ago

Amelia has to pay an initial fee of 300 plus 150 per month to rent a space at a salon/

Andrej [43]

Answer:D

Step-by-step explanation:

3 0

3 years ago