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Nadusha1986 [10]
3 years ago
14

What is the solution to this system of linear equations? 2x + y = 1 and 3x - y = -6

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
4 0

Answer:

(- 1, 3 )

Step-by-step explanation:

Given the 2 equations

2x + y = 1 → (1)

3x - y = - 6 → (2)

Adding the 2 equations term by term eliminates the y- term, that is

5x = - 5 ( divide both sides by 5 )

x = - 1

Substitute x = - 1 into either of the 2 equations and evaluate for y

Substituting into (1)

2(- 1) + y = 1

- 2 + y = 1 ( add 2 to both sides )

y = 3

Solution is (- 1, 3 )

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Please help me guys!!!:)
mash [69]

Answer:

The answer is >

second one

Step-by-step explanation:

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6 0
3 years ago
Write 73/50 as a decimal
pochemuha

Answer:

1.46

Step-by-step explanation:

To write 73/50 as a decimal you have to divide numerator by the denominator of the fraction.

We divide now 73 by 50 what we write down as 73/50 and we get 1.46

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4 0
3 years ago
Read 2 more answers
There are (4^9)^5 ⋅ 4^0 books at the library. What is the total number of books at the library?
nevsk [136]
(4^9)^5 * 4^0

4^45 * 1

4^45 in its simplest form (in other words, a very large number).


1.23794004E+27
7 0
3 years ago
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The sum of three consecutive numbers is<br> 42. Find the largest number in the set
omeli [17]

Answer:

20

Step-by-step explanation:

Well consecutive numbers mean that the 3 numbers will follow each other in smallest to largest.

Example : 6, 7, 8 or 6,34,87

Non-Example : 7, 9, 6

As long as the number is greater than the one before it they are consecutive.

Following this rule I have come up with the numbers :

10, 12, 20

These three numbers are consecutive and equal to 42.

Now to find the largest number in this set just look at the greatest value which would be 20.

I don't have an entire explanation for this as I just did it in my head but I do hope it is correct.

I hope this helps! :)

8 0
3 years ago
Tickets to a movie cost $7.25 for adults and $5.50 for students a group of friends purchased 8 tickets for $52.75 how many adult
irina1246 [14]

Answer:

The number of adults tickets and student tickets purchased is 5 and 3.

Given that,

Tickets to a movie cost $7.25 for adults and $5.50 for students.

A group of friends purchased 8 tickets for $52.75.

Here we assume the no of adult tickets and no of student tickets be x and y.

Based on the above information, the calculation is as follows:

7.25x + 5.50y = 52.75 .............(i)

x + y = 8

x = 8 - y..................(2)

Now put the x value in the equation (1)

So,  

7.25(8-y) + 5.50y = 52.75

7.25 × 8 - 7.25y + 5.50y = 52.75

58 - 1.75y = 52.75

5.25 = 1.75y

y = 3

So,  

x = 8 - 3

= 5

Therefore we can conclude that the number of adults tickets and student tickets purchased is 5 and 3.

-Hope this helps<3

4 0
2 years ago
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