1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zepler [3.9K]
3 years ago
13

Solving a system of linear equations using the substitution method. 5x+4y=-26 5-x=-6y

Mathematics
2 answers:
yan [13]3 years ago
5 0
Solve for x in 2nd equation
times -1 both sides
x-5=6y
add 5
x=6y+5

sub

5(6y+5)+4y=-26
30y+25+4y=-26
34y+25=-26
minus 25 both sides
34y=-51
divide both sides by 34
y=-3/2
sub back

x=6y+5
x=6(-3/2)+5
x=-18/2+5
x=-9+5
x=-4


(-4,-3/2) is solution
Naddik [55]3 years ago
5 0
We write x in terms of y in order to substitute using the second equation
-x=-6y-5
x= 6y+5

We substitute what we got above in the first equation 
5(6y+5)+4y=-26

We solve for y
30y+25+4y=-26
34y+25=-26
34y=-51
y=-51/34

Then we plug what we got for y back in our first equation in order to get the value of x as well

x=6(-51/34)+5
x=-4

So the solutions are:
x=-4
y=-1.5
You might be interested in
During the day,Sam spent $4.85 on lunch.he also bought 2 books for $7.95 each. At the end of the day we had $8.20 left how much
Vlada [557]
20.75 because if you add 4.85+7.95+7.95 add that you get 20.75

7 0
3 years ago
How many x intercept appear on the graph of the polynomial function F(x)=x4-5x2
4vir4ik [10]
f(x)=x^4-5x^2\\\\x^4-5x^2=0\\\\x^2(x^2-5)=0\\\\x^2[x^2-(\sqrt5)^2]=0\\\\x^2(x-\sqrt5)(x+\sqrt5)=0\iff x=0\ \vee\ x=\sqrt5\ \vee\ x=-\sqrt5

Answer: 3 x-intercepts.

3 0
3 years ago
What can you say about his average speed?
Nikitich [7]
The answer should be E. 223- 6s = 0
5 0
3 years ago
What is the lateral area of the cylinder
Wewaii [24]
The area of a lateral area of the cylinder is L.S.A. and =2\pi ph<span>

i cant use the pie symbol on here </span>
4 0
3 years ago
Read 2 more answers
List all the factors of 392.
pshichka [43]

Answer:

1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392.

UMM.. Not sure

might not be all of them but i guess it should help you:/

7 0
2 years ago
Other questions:
  • Which relationship would most likely be casual? Select two options
    12·1 answer
  • Violet contributes 12% of her $55,700 annual salary to her 401(k) plan. What is her pretax income?
    12·2 answers
  • Can someone please help me? I don't know how to do this. I will mark brainliest! Thanks!
    6·2 answers
  • What is the nth term rule for the liner sequence below 15,7,-1,-9,-17
    6·1 answer
  • M
    8·1 answer
  • What two number multiple to get -72 and add up to -6
    13·1 answer
  • Algerbraic expression in shape<br> ANYONE PLZ HELP GIVING BRAINLIEST ASAP<br> :)))
    9·2 answers
  • Explain how the model represents 5/ 1third
    13·1 answer
  • State if each scenario involves a permutation or a combination. Then find the number of possibilities.
    15·1 answer
  • The eccentricity of the conic section
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!