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Cerrena [4.2K]
3 years ago
5

Which ordered pair is the solution set for the system of equations below? 2x + y = 18 x – y = –6

Mathematics
1 answer:
qaws [65]3 years ago
7 0

Answer:

(4,10) is the solution

Step-by-step explanation:

2x + y = 18

x – y = –6

Using elimination

2x + y = 18

x – y = –6

----------------------

3x    = 12

Dividing each side by 3

3x/3 = 12/3

x =4

Now we can find y

2x+y = 18

2(4) +y =18

8+y = 18

Subtracting 8 from each side

8-8+y = 18-8

y=10

(4,10) is the solution

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<img src="https://tex.z-dn.net/?f=%20-%207%20%2B%20%20%5Cfrac%7Bf%7D%7B2%7D%20%3D%20%20-%201" id="TexFormula1" title=" - 7 + \f
vovikov84 [41]

First you had to add by seven from both sides of equation form.

-7+\frac{f}{2}+7=-1+7

Then simplify by equation.

\frac{f}{2}=6

Next, you multiply by two from both sides of equation form.

\frac{2f}{2}=6*2

And finally, simplify by equation.

6*2=12

2*6=12

12/6=2

12/2=6

f=12

Final answer: \boxed{f=12}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

3 0
3 years ago
Find the value of ​f(​3) for the function. f(3)=-5(x+5)
iogann1982 [59]

Answer:

Step-by-step explanation:

f(3)=-5(x+5)

     =5(3) +5

     =15+5

f(3)      =20

6 0
3 years ago
Explain how you can tell how well a linear or exponential fits a set of data
kotykmax [81]
The coordinates that you record is an example of data from the graph I think
4 0
3 years ago
If f(x)= |x^3-3| then f(-1) is equivalent to
emmasim [6.3K]

Hello from MrBillDoesMath!

Answer:

4

Discussion:

f(x) =  abs (x^3 - 3)        =>

f(-1) = abs ( (-1)^3 -3 )    =>        (-1)^3 =  -1

f(-1) = abs( -1 -3 )           =>       -1 =3 = -4

f(-1) = abs(-4)               =>

f(-1) = 4

Thank you,

MrB

8 0
4 years ago
Jane little rents a car for 39.00 a week. She pays 15.00 a week for the insurance and spends 17.50 weekly on gas. What will her
Montano1993 [528]
There are 4 weeks in a month.
All the numbers in the question are saying how much she will pay per week,so all we have to do is multiply each number by 4.
39.00<span>×4=156
15.00</span><span>×4=60
17.50</span><span>×4=70
Now all we have to do is add.
156+60+70=286.

Your answer will be that Jane has to pay 286 dollars per month on the car.</span>
8 0
4 years ago
Read 2 more answers
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