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
liraira [26]
3 years ago
12

Find x and y using subsitution -3x + y = 6 5x + 2y =23

Mathematics
2 answers:
vazorg [7]3 years ago
4 0

\left\{\begin{array}{ccc}-3x+y=6&|\text{add 3x to both sides}\\5x+2y=23\end{array}\right\\\\\left\{\begin{array}{ccc}y=3x+6\\5x+2y=23\end{array}\right\\\\\text{substitute}\ y=3x+6\ \text{to the second equation}\\\\5x+2(3x+6)=23\qquad|\text{use distributive property}\\\\5x+(2)(3x)+(2)(6)=23\\\\5x+6x+12=23\qquad|\text{subtract 12 from both sides}\\\\11x=11\qquad|\text{divide both sides by 11}\\\\\boxed{x=1}\\\\\text{subtract the value of x to the first equation}\\\\y=3(1)+6\\\\y=3+6\\\\\boxed{y=9}

<h3>Answer: x = 1 and y = 9 → (1, 9).</h3>
KatRina [158]3 years ago
4 0
5x+2y=23
-3x+y=6
-
—————-
8x+y=17
-3x+y=6
-
——————
11x=11
X=1


5+2y=23
2y = 18
Y= 9
You might be interested in
9 full moons in 252 days rate
Veronika [31]
So if you're looking for the rate, then maybe you're looking for how many days one full moon will appear. You would have to divide 252 by 9, and that would make 28.

1 FULL MOON in 28 DAYS.
4 0
3 years ago
Read 2 more answers
PLEASE HELP!!! GIVING AWAY BRAINLIEST AND 20 POINTS!!!!!!!!!!!!!!!!!
ludmilkaskok [199]

Answer:

X = 2 and Y = 3  

Step-by-step explanation:

3(2) = 6

4(3)= 12

12 + 6 = 18

Hope I helped. Mark as Brailiest please ^-^

8 0
3 years ago
Help please quick math problem ​
Brrunno [24]
I think the answer is C.
I’m not sure.
If I’m wrong I’m really sorry. Have a great day.
3 0
3 years ago
A company sells doughnuts. They incur a fixed cost of $23000 for rent, insurance, and other expenses. It costs $0.1 to produce e
olasank [31]

Answer:

C(x) = 0.1x+23000

Step-by-step explanation:

Given that a company sells doughnuts. They incur a fixed cost of $23000 for rent, insurance, and other expenses. It costs $0.1 to produce each doughnut. The company sells each doughnut for $0.2.

Let X be the no of units produced

Then we have variable cost = 0.1x

Fixed cost = 23000 (irrespective of value of x)

Total cost

C(x) = 0.1x+23000

where C represents the total cost and x no of units produced.

Revenue function would be

R(x) = 0.2x assuming all doughnuts are sold.

Profit function would be

P(X) = 0.1x-23000

4 0
3 years ago
Which electron configuration represents the electrons of a sulfur atom in an excited state? Choice number 2 (1) 2-6-6 (3) 2-8-4
Archy [21]

Answer:

<em>(3) 2-8-4</em>

<em></em>

Step-by-step explanation:

Sulphur has an atomic number of 16

sulphur can exist in 3 different excited states of +2, +4 and +6

electronic configuration of sulphur is 2,8,6

when excited, <em>it loses 2 electrons to enter the +2 state</em>

in the +2 state, the electronic configuration will be <em>2,8,4</em>

8 0
3 years ago
Other questions:
  • the length of the flower garden is 3 times as great as the width. what are the dimensions of the flower garden
    7·1 answer
  • Last questions for my last 15 pts.
    5·1 answer
  • The difference of the square of a number and 27 is equal to 6 times that number. Find
    6·1 answer
  • PLZ HELP ME W DIS!!!
    6·1 answer
  • What is the area of this triangle
    10·1 answer
  • Todd Lyle worked Monday through Friday from 8:00 A.M. to 5:00 P,M. with an hour off for lunch. He is paid $10,50 an hour. Find h
    15·1 answer
  • The table shows the way students travel to school at Peace Middle School.
    13·2 answers
  • Find the value of x in the triangle shown below.<br> a. x=80<br> b. x=48<br> c. x= 32<br> d. x=12
    15·1 answer
  • What is the range of the numbers 5,9,7,2,2
    12·1 answer
  • Kristina needs to mix a 10% alcohol solution with a 50% alcohol solution to create 200 millileters of a 48% solution. How many m
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!