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Amiraneli [1.4K]
3 years ago
5

| 7x + 3y = -8

Mathematics
1 answer:
sergejj [24]3 years ago
6 0

Answer:

A) 7x + 3y = -8

B) -4x - y = 6 Multiplying B) by 3

B) -12x -3y = 18 then we add A)

A) 7x + 3y = -8

-5x = 10

x = 2

y = -2

Answer is the first one (2, -2)

Step-by-step explanation:

You might be interested in
4 x 2 -3= equals what.
yaroslaw [1]

Answer:

5

Step-by-step explanation:

4 x 2 - 3 =

8 - 3 =

5

4 0
3 years ago
Read 2 more answers
Please help with question
Step2247 [10]
To solve this problem you must apply the proccedure below:

 1. Let's call:

 x: hot dogs.
 y: hamburguers.

 2. Then, you must make a system of equations, as below:

 5x+4y=12.25  (i)
 4x+5y=12.50  (ii)

 3. Now, you can solve the system of equation as below:

 5x+4y=12.25
 x=(12.25-4y)/5

 4x+5y=12.50
 4((12.25-4y)/5)+5y=12.50
 y=1.5

 4x+5y=12.50
 4x+5(1.5)=12.50
 x=1.25

 4. Therefore, the answer is:

 The cost of one hot dog is $1.25 and the cost of one hamburguer is $1.50
 
8 0
3 years ago
How can I find the slope to this I need help​
Dmitrij [34]

Answer:

Your slope is -1

Step-by-step explanation:

Find the change in x and the change in y and put it in change in y over change in x.

Δx = -1 - -2 = 1

Δy = -1 - 0 = -1

Slope = rise over run = Change in y over change in x =  Δy/Δx = -1/1

Therefore the slope is -1/1 which is written as just -1

7 0
3 years ago
in the school library 52% of the books are paperback if there are 2650 books in library how many of them are not paperback to th
wlad13 [49]

i will use proportions for this.

 x          52

------- = --------

2650    100

Cross multiply and u get 1378.

Hope it helps. :)

3 0
3 years ago
Sebastian and teshawn go to the movies. the tickets cost $16 in total. the boys share the cost equally. how much does tedrawn pa
olya-2409 [2.1K]
Teshawn pays 8 dollars
5 0
3 years ago
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