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
Aleksandr [31]
2 years ago
6

Which choice is the most efficient first step to solve this set of

Mathematics
1 answer:
Lisa [10]2 years ago
4 0

Answer:

b) Substitute (3x - 5) for y in the second equation.

Step-by-step explanation:

If using the substitution method, then the second choice is the most efficient first step.

<u>What is the substitution method?</u>

The substitution method can be used to solve a system of equations. It is when you isolate any of the variables from one of the equations and then substitute that value into the other equation.

Here, the first equation already has an isolated variable, y. We can then substitute its value into the second equation. Like so:

⇒ 2x + 6y = 20

⇒ 2x + 6(3x - 5) = 20

Learn more about the substitution method here:

brainly.com/question/27728118
brainly.com/question/26094713

You might be interested in
Which of the following equations represents the greatest value of x?
jonny [76]
Hey mate!
You stuck?

^3 The cube root of 125=5
^2 The square root of 35=5.91
^3 The cube root of 64=4
^2 The square root of 38=6.16

Therefore your answer would be x2= 38, because 6.16 is greater than the other sums.



Hope this helps! :) (Don't forget Brainliest) :)
3 0
3 years ago
Read 2 more answers
What’s the equation of the line in point-slope form?
nevsk [136]

Answer:

where is the picture at?

Step-by-step explanation:

5 0
3 years ago
1.8 + 7n = 9.5 - 4n<br> Solve the equation
Misha Larkins [42]
1.8+7n=9.5-4n \\\\ 7n+4n=9.5-1.8 \\\\ 11n=7.7 \\\\\ \boxed{n=\frac{7.7}{11}=0.7}
8 0
3 years ago
Read 2 more answers
The manufacturer of banjos spends $250 to make each banjo and sells them for $400. The manufacturer also has fixed costs each mo
raketka [301]

Answer:

The cost for making x banjos is c = $ 400 x

Step-by-step explanation:

Given as :

The making cost of each banjos = $ 250

The selling cost of each banjo = $ 400

Let The cost for making x banjos = c

Now,

∵ For making 1 banjos , the making cost = $ 250

∴  For making x banjos , the making cost = $ 250 × x

Again,

∵ The selling price of 1 banjos = $ 400

∴ The selling price of x banjos = = $ 400 × x

Hence The cost for making x banjos is c = $ 400 x . Answer

5 0
3 years ago
Read 2 more answers
F(x)=x^2-2x-8 what is axis of symmetry , vertex and roots?
enyata [817]
X^2 - 2x - 8 

2 numbers that multiplied give -8
2 numbers that added give -2 

2 x -4 = -8
2 + -4 = -2

(x + 2) (x -4 )

roots equal = -2, 4
  



x^2 - 2x -8
  a.   b.   c          because b is -2 in the equation you don't plug b as a negative    
                            in the axis of symmetry
    
axis of symmetry = -b divide by 2a 

                               2 divide by 2(1) =1 



Vertex= (1, -9)


7 0
3 years ago
Other questions:
  • What coordinate do lines 2/3x+1/6y=2/3 and 4x+y=4 meet?
    14·1 answer
  • As a membership fee, a health club charges a one-time amount of $40 and charges $25 for each month. The total fee after m months
    11·2 answers
  • See attachment. Is the mall and bookstore corresponding? Or if I move the bookstore to where the star is they would be correspon
    10·1 answer
  • Please help! Question is in picture. If you can answer both questions that’ll be great please &amp; Thank you!! :)
    12·1 answer
  • Need some help on this please
    11·1 answer
  • Solve the following system using elimination <br> 2 x − 3 y = −2 <br> 9 x − 10 y = 12
    5·1 answer
  • 3 pair of pants dry clean for $18, is this a proportional equation
    15·2 answers
  • Z+14.5=5.4<br> z=<br> -14=c-10<br> c=<br><br> please help
    12·1 answer
  • PLEASE HELP ME!!! philip would be able to buy 15 apples if he had $2.10 more money than he has now. if he buys 12 apples, how wo
    15·1 answer
  • What is the area of this triangle?<br><br> _units²
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!