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
ollegr [7]
3 years ago
13

Solve the simultaneous equations 2x+y=5 5x+3y=12

Mathematics
1 answer:
Bezzdna [24]3 years ago
5 0

Answer:

x=3 and y= -1

Step-by-step explanation:

Step 1: Solve2x+y=5 for y:

2x+y=5

2x+y+−2x=5+−2x(Add -2x to both sides)

y=−2x+5

Step 2: Substitute−2x+5foryin5x+3y=12:

5x+3y=12

5x+3(−2x+5)=12

−x+15=12(Simplify both sides of the equation)

−x+15+−15=12+−15(Add -15 to both sides)

(Divide both sides by -1)

x=3

Step 3: Substitute3forxiny=−2x+5:

y=−2x+5

y=(−2)(3)+5

y=−1(Simplify both sides of the equation)

Answer:

x=3 and y=−1

You might be interested in
The population of a bacteria sample doubles every 6 hours. How long would it take for the population to triple?
seraphim [82]

The way to solve this question is to essentially reverse the equation I used in the other answer.


I would solve this with some theoretical values. If you start with 3, how long would it take for it to triple, or reach 9.


the equation would look like 9 = 3(2)^t/6, note how the instead of 1/2 it is now 2 in the parenthesis, as it doubles every 6 hours rather than halves every amount of hours.


When placed into an algebra calculator, the answer should be about 9.5 hours

8 0
3 years ago
Read 2 more answers
Taj asked 27 classmates whether they know how to write calligraphy .
sukhopar [10]

Answer:

so

Step-by-step explanation:

what

8 0
3 years ago
The ratio of vowels to consonants in a word is 5 to 7. Are there more vowels or consonants in the word?
lbvjy [14]
If the ratio is 5-7... this means there are more consonants
3 0
3 years ago
A bottle of has a capacity of 0.43 L. How many milliliters of shampoo does the bottle contain (1 L = 1000 mL
jenyasd209 [6]

Answer:

1 = 1000

0.43 L = _________ mL

0.43 * 1000 = 430 mL

<em><u></u></em>

<em><u>430 mL is the answer.</u></em>

<em><u></u></em>

<em><u>Hope this helps</u></em>

4 0
3 years ago
Pls help: √5 multiplied by √245
Luden [163]

I believe it is 35!

I hope this helps you, and don't forget to give this answer brainliest if it really helped!

5 0
2 years ago
Other questions:
  • Two trains leave stations 442 miles apart at the same time and travel toward each other. One train travels at 95 miles per hour
    15·1 answer
  • Find the number to add to x2+8⁢x to make it a perfect square trinomial. Write that trinomial as the square of a binomial.
    5·1 answer
  • Pls help w math !
    13·2 answers
  • Nine members of the drama club are going to New York to see a broadway play as a group. Total cost for tickets, including a $15.
    13·1 answer
  • 3x+2y=8
    13·1 answer
  • Find M<br> A. 17<br> B. 16<br> C. 18<br> D. 20
    12·1 answer
  • PLEASE HELP .
    8·1 answer
  • Which expression is NOT equivalent to 3^5?
    5·1 answer
  • For trans thanks for helping me your the best
    5·1 answer
  • Choose the best response to the question below:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!