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
anyanavicka [17]
3 years ago
13

What is the value of x and y

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
6 0

Answer:

x=3, y=3

Step-by-step explanation:

If we plug in 3 for each variable, their sum is 6, and the first equation will be true.

Sholpan [36]3 years ago
4 0

Answer:

x=y=3

Step-by-step explanation:

Given Equation:

2x+3y=15   Equation:1

x+y=6        

or x=6-y      Equation:2

Using Substitution method, put the value of 'x' in equation:1

2x+3y=15

2(6-y)+3y=15\\\\2(6)-2(y)+3y=15\\\\12-2y+3y=15\\\\12+y=15\\\\

Subtracting '12' both sides:

12+y-12=15-12\\\\y=15-12\\\\y=3\\\\

Putting value of 'y' in equation:2

x=6-y

x=6-3\\\\x=3

So, the values are:   x=y=3

You might be interested in
Which of the following sets could be the sides of a right triangle?
coldgirl [10]

Answer: Choice B) {3, 5, sqrt(34)}

=====================================

Explanation:

We can only have a right triangle if and only if a^2+b^2 = c^2 is a true equation. The 'c' is the longest side, aka hypotenuse. The legs 'a' and 'b' can be in any order you want.

-----------

For choice A,

a = 2

b = 3

c = sqrt(10)

So,

a^2+b^2 = 2^2+3^2 = 4+9 = 13

but

c^2 = (sqrt(10))^2 = 10

which is not equal to 13 from above. Cross choice A off the list.

-----------

Checking choice B

a = 3

b = 5

c = sqrt(34)

Square each equation

a^2 = 3^2 = 9

b^2 = 5^2 = 25

c^2 = (sqrt(34))^2 = 34

We can see that

a^2+b^2 = 9+25 = 34

which is exactly equal to c^2 above. This confirms the answer.

-----------

Let's check choice C

a = 5, b = 8, c = 12

a^2 = 25, b^2 = 64, c^2 = 144

So,

a^2+b^2 = c^2

25+64 = 144

89 = 144

which is a false equation allowing us to cross choice C off the list.

7 0
3 years ago
Help me with my homework
EleoNora [17]

Answer:

a because I dont know why but some one told me it was this

3 0
3 years ago
Read 2 more answers
We have a bag that contains 100 balls, 50 of them red and 50 blue. Select 5 balls at random. What is the probability that 3 are
MakcuM [25]

Answer:

Likely, I think I havent been in this for a long time so i may be a little rusty. But anyways, I hope this helped!

Step-by-step explanation:

5 0
2 years ago
How do I solve 8x+5y=-20 ?
Vlad [161]

Answer: y=-8/5x-4

Step-by-step explanation:

8x+5y=-20

-8x         -8x

5y=-8x-20

/5     /5

y=-8/5x-4

4 0
3 years ago
Solve for x -3+8×-5=-8
Art [367]

Answer:

x is 0

Step-by-step explanation:

subtract the number 3 5 and 8 then combine like terms and 8 on both sides of the equation then simplify after that divide both sides of the equation by the same term then simplify

5 0
2 years ago
Other questions:
  • A northbound train and a southbound train meet each other on parallel tracks heading in opposite directions. The northbound trai
    5·1 answer
  • Mateo made the model below to represent the number of miles he swims in the
    10·1 answer
  • What is the remainder of 47 divided by 6 with array
    14·2 answers
  • PLEASE HELP!!!! DUE TONIGHT
    9·1 answer
  • What fraction is greater 1/2 or 6/11
    13·1 answer
  • you have $47 to spend at the music store. Each cassette tape costs $5 and each CD cost $10. write a linear inequality that repre
    12·2 answers
  • Which expression should you simplify to find the 90% confidence interval,
    7·1 answer
  • Find the percent increase from 2005- 2010
    9·1 answer
  • Jenn buys a pair of jeans for $21.99. Her friend Karen spends $6.50 more for the same pair of jeans. Vicki paid the same price a
    10·1 answer
  • What happens when you reflect an object over intersecting line( combination of reflection)?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!