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
densk [106]
3 years ago
11

Resolva os sistemas abaixo 2x+3y=80 3x+2y=70 X=8y X+4y=480

Mathematics
1 answer:
timurjin [86]3 years ago
7 0
Solución 1: 2(x) + 3(y) = 80
solución 2: 3(x) + 2(y) = 70

3(y) + 2(x) = 80
2(y) + 3(x) = 70

2y = -3x + 70
y = -3x÷2 + 35

2x + 3(-3x÷ 2+35) = 80  
-5x÷2 = -25  
-5x = -50

5x = 50   
x-intercept: 10 
x = 10  
y = -3x÷ 2+35

  y = -(3÷2)(10)+35 = 20 

x-interpcet: 10
y-intercept: 20
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
solución: x - 8y = 0
solución x + 4y = 480

-8y + x = 0
4y + x = 480

x-intercept (solución 2)
x = -4x + 480

x-intercept (solución 1)
4y + 180 - 8y = 0
-12y = 480

y-intercept: 40
x-intercept: 320


Buena Suerte!


You might be interested in
20 POINTS! HELP!
ziro4ka [17]
Im not entirely sure but i thinks its c

6 0
3 years ago
Read 2 more answers
Last week Bill made a purchase of $56.78 before tax. This week, the same items on sale would have cost him $41.90 before tax. If
olga2289 [7]
I think $43.57 Bc 41.90 times .04 is 16.76 then move the decimal, and add 41.90+1.67=43.57
4 0
3 years ago
Read 2 more answers
What is the sum of 1/9, 2/3,and 5/18? A.19/18 B.8/30 C.4/15 D.12/9
amm1812
1/9 times 2/2=2/18
2/3 times 6/6=12/18

2/18+12/18+5/18=(2+12+5)/18=19/18=1 and 1/8


A is answer
8 0
3 years ago
1 pizza can feed 4 people. How much pizza would be needed to feed 18 people?
Dmitry [639]

Answer:

About 5 pizzas

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
5x + 3 = 6x – 1<br> Solve for the solution
Genrish500 [490]

Answer: x=4

Step-by-step explanation:

Subtract 6x from both sides.

5x+3−6x=6x−1−6x

−x+3=−1

Step 2: Subtract 3 from both sides.

−x+3−3=−1−3

−x=−4

Step 3: Divide both sides by -1.

−x/−1 = −4/−1

x=4

4 0
3 years ago
Read 2 more answers
Other questions:
  • Consider the simple linear regression model Yi=β0+β1xi+ϵi, where ϵi's are independent N(0,σ2) random variables. Therefore, Yi is
    8·1 answer
  • Please help with this questions!
    9·1 answer
  • What numbers go evenly into 78
    11·1 answer
  • 2. The beam of a lighthouse can be seen for up to 20 miles. You are on a ship that is 10 miles east and 16 miles north of the li
    15·1 answer
  • Janet wants to solve the equation above, what should she multiply by both sides of this equation by
    12·2 answers
  • Using the linear equation 4x–3y=12, express:
    6·1 answer
  • Water samples from a particular site demonstrate a mean coliform level of 10 organisms per liter with a standard deviation of 2.
    7·2 answers
  • How is understanding the place value system useful for understanding negative powers of 10?
    15·2 answers
  • A cube and a square pyramid were joined to form the composite solid. A cube with side lengths of 12 inches. A square pyramid wit
    13·2 answers
  • Help me 30 points plzzzz
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!