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
ch4aika [34]
3 years ago
5

Solve the system by substitution 5x+3y=8 3x+y=8

Mathematics
2 answers:
Doss [256]3 years ago
8 0

First you'd have to eliminate one of the variables, so which I used y. So to get rid of y, you need to multiply the whole equation, 3x+y=8, by 3. Which then you get 9x+3y=24.

On the second equation, it's stays the same. 5x+3y=8, except you chane the value of the number, so if it's positive change it to negative and vice versa.

So now you have -5x-3y=-8 and 9x+3y=24.

9x + 3y =24

-5x - 3y = 8

if you combine the terms, you'll see y is removed from the equation 3y-3y=0.

You're left with 4x=16, which x is 4.

Now you can substitute 4 for x to find y. Just use one of the equations to do this to, try 3x+y=8.

3(4)+y=8.

12+y=8

y=-4.

If you need the answer to be in a point form, it's (4,-4)


Olenka [21]3 years ago
7 0
There you go, hope that this helps

You might be interested in
*WILL MARK BRAINLIEST*
nikdorinn [45]

Answer:

3\sqrt{5} which is approx 6.71

Step-by-step explanation:

\sqrt{45} = \sqrt{9}·\sqrt{5} = 3\sqrt{5}

4 0
2 years ago
The distance between the points (-2, -4) and (3,8) is?
forsale [732]

Answer:

(5,4)

Step-by-step explanation:

6 0
3 years ago
Solve the inequality 11d - 9 < 15d + 3
Yanka [14]
11d - 9 < 15d + 3\\&#10;-4d-3
8 0
3 years ago
The following box plot shows the number of hours students have spent of math this week. what information can you get from this?
Tasya [4]

Answer:

Step-by-step explanation:

(a). The median number of hours spent on Math was about 2.9 ;

3 0
3 years ago
How many shares of Lombard Incorporated traded on the 17th?
Naily [24]

Answer:

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • an express bus left town A at 18:15 hours and reached town B at 21:05 hours.how long did the journy take?
    6·2 answers
  • What 5 consecutive odd numbers equal 200
    7·1 answer
  • How do you use multiplication to find the perimeter of a square
    12·2 answers
  • Suppose you invest $750.00 in a fund earning 6% simple discount. A certain time later you withdraw the investment (principal and
    9·1 answer
  • 7 guests coming to the party. Each guest drink 500ml of lemonade each. How many litres of lemondae yo buy. If rach litre costs &
    5·1 answer
  • If the population standard deviation is o=10, how large a sample is necessary to have a standard error that is less than 5 point
    14·1 answer
  • What is the GCF of 2x^3-7x^2+3x
    12·2 answers
  • I need help plz help!!
    15·1 answer
  • PLEASE HELP AND GET POINTS!
    13·2 answers
  • Tom will take the 10:49 AM train to San Diego. The train is estimated to arrive in San Diego in 3:38 hours minutes. What is the
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!