Answer: 
Step-by-step explanation:
<u>Given the system of equation</u>


<u>Expand the parenthesis of the 1) equation</u>




<u>Current System</u>


<u>Substitute the y value of the 1) equation with the 2) equation</u>

<u>Add ( x² + 4x + 3) on both sides</u>


<u>Combine like terms</u>


<u>Factorize the quadratic equation</u>


<u>Substitute the x values into one of the equations to find the y value</u>



<u>Therefore, the two solutions are:</u>

Hope this helps!! :)
Please let me know if you have any questions
All you need to do is multiply 84 by 4.
The number of gallons by the number of quarts <em>in a gallon. </em>
80*4= 320
4*4=16
320+16= 336
There are 336 quarts of water supplied an hour.
I hope this helps!
~kaikers
Answer:
mn
Step-by-step explanation:
Answer:
The cost for 1 chair is $2.75 and the cost for 1 table is $8.75
Step-by-step explanation:
Use the elimination method of linear equations to find your answer.
Our equations for this problem are:
3c+5t=52 and 9c+7t=86
1. Multiply the entire first equation by -3.
-3(3c+5t=52)
2. Simplify the equation from above:
-9c-15t=-156
3. Stack the two equations on top of each other and add/subtract:
-9c-15t=-156
9c+7t=86
4. You should be left with -8t=-70. Simplify this to find the value of t:
t=8.75
5. Plug the value of t into any of the original equations and solve for c.
3c+5(8.75)=52
6. Simplify the equation above:
3c+43.75=52
7. Subtract 43.75 from both sides of the equation:
3c=8.25
8. Divide both sides by 3 to get your c value:
c=2.75
8 x 5 = 40
40 x 18 = 720
Hope this helps!