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
olganol [36]
3 years ago
8

How to solve #4 using substitution/ elimination method

Mathematics
1 answer:
kolezko [41]3 years ago
3 0
3x+y = 4
  x+y=  2 multiply all the elements of (x+y) by -1 & then add it up to the 1st equation
3x+y=4
-x-y =-2
----------
2x+0y =2 ==> x=2/2 =1 & replace x=1 by its value in any of the equation & you will get the value of y=1

2) 3x+y = 7
x+2y = 4
Follow the same methodology as before, but to eliminate y, multiply the 1st equation by (-2) and you will get x=2 & y=1


You might be interested in
Help me thxs! I have a problem finding the answer
insens350 [35]
905 whatever that is (I forgot)
8 0
3 years ago
Dentify as an increase or decrease. Then find the percent of increase or decrease. If necessary, round to the nearest percent.
love history [14]

Answer:

Step-by-step explanation:

The difference is 130-150 = -20, a decrease.

-20/150 ≅ -0.133, a decrease of 13.3%

4 0
3 years ago
Aaron has 14 2/5 feet of rope. *He cuts it equally into 2 pieces. *He then cuts 1 of these pieces into 2/5 foot sections. How ma
Lunna [17]
He has 18 sections that are 2/5 feet long plz mark me branliest
3 0
3 years ago
Read 2 more answers
For a party Gary buys cheese pizzas for $5 and pepperoni pizzas for $8 each. His bill comes to $75. Let x represent the number o
Aloiza [94]

Answer:

The answer is the second answer from the image. Which is 5x-8y=$75

Step-by-step explanation:

It is that answer because it costs $5 for one cheese pizza and $8 for a pepperoni pizza, so the answer is 5x-8y=75

still confused?

Its that answer because the first one and the third one are the same, just both equations like in different ways like example 10+2 is 12 right? And 2 + 10 is still 12 so that means the second answer from the image is the answer.

Hope that helps.

3 0
3 years ago
Read 2 more answers
Is it possible for a number to be a rational number that is not an integer but is a whole number? Explain.
Naily [24]
No because every integer is a rational number, since each integer can be written in the form x/1. For example 12 = 12/1 and thus 12 is a rational number. And also every whole number is a rational number: for example, 12= 12/1. So it is rational.
4 0
3 years ago
Other questions:
  • Help !!!!!!!!!!!!!!!!!!!!!!!!!!
    15·1 answer
  • Find the​ slope-intercept form of the line whose slope is 5 and that passes through the point left (-2,8)
    8·1 answer
  • Find the inverse of the given function. f(x)= -1/2SQR x+3, x greater than or equal to -3
    15·2 answers
  • Is (1, 2) a solution of 6x-y > 3?
    9·1 answer
  • Convert 19'54" into a fraction of a degree. A. (199/600)° B. (199/1,200)° C. (199/900)° D. (199/1,800)°
    15·2 answers
  • Convert to a mixed number 18/4 <br> 4<br> 18<br> ​
    15·2 answers
  • Anita bought 3.74 ounces of chocolate. 0.81 ounces of it was milk chocolate and the rest was dark chocolate. How much dark choco
    13·1 answer
  • Help please!! thank you
    14·1 answer
  • Series of math questions
    8·1 answer
  • A minor league hockey team had the following scores for the start of the season for the start of the season 3,6,2,1,2,3,0,4,5,1,
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!