Question

PLLLEEAASSEE NEED HELP NOW WILL GIVE MEDAL3. Solve the system of equations using linear combination.
a+c=9
8a+4.5c=58

Answer 1

I usually draw a graph for this so, first I would draw (0,9), and (9,0)

Answer 2

then draw a slope that meets these two ends

Answer 3

This is for a word document and I have to do it in equation form do you know how to do that?

Answer 4

a= 5
c=4

http://www.webmath.com/solver2.html

Answer 5

The website shows you how to do it step-by-step and include equations :)

Answer 6

could you walk me through it my computer won't open that site

Answer 7

@Love_Ranaa

Answer 8

I'll try

Answer 9

maybe you could use the website then walk me through it?

Answer 10

nevermind I got the website to open

Answer 11

If they were y=, you could graph them and see where they intersected, but since not you will have to try to isolate the variable.

1. Choose one equation and isolate one variable; this equation will be considered the first equation.

2. Substitute the solution from step 1 into the second equation and solve for the variable in the equation.

3. Using the value found in step 2, substitute it into the first equation and solve for the second variable.

4. Substitute the values for both variables into both equation to show they are correct.



Does this help or do you need picture examples?

Answer 12

Oh I didn't see you response but glad I could help :)