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ivanzaharov [21]
3 years ago
8

Simplify fowllow the order of operarions 12-7+9-2

Mathematics
2 answers:
steposvetlana [31]3 years ago
6 0
12 bro it even says to follow the order of operations. If there is only addition and subtraction you just go from left to right. Same with if there is only multiplication and division.
Gennadij [26K]3 years ago
5 0
The answer is 12. First you solve the equation from left to right. 12-7= 5, 5+9=14, and last is 14-2 which is 12.
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Please help, thank you
solmaris [256]

Answer:

1.

8x + 6y = 28

9x + 3y = 39

Set to equal y.

8x + 6y = 28

6y = -8x + 28

y = -8/6x + 28/6

y = -4/3x + 14/3

9x + 3y = 39

3y = -9x + 39

y = -9/3x + 39/3

y = -3x + 13

Set equal to each other.

-4/3x + 14/3 = -3x + 13

Combine like terms.

5/3x = 25/3

Multiply by 3/5

x = 5

Plug x in.

y = -3(5) + 13

y = -15 + 13

y = -2

(5, -2)

2.

-2x - 9y = -3

-7x - 9y= -33

Set equal to y.

-2x - 9y = -3

-9y = 2x - 3

y = -2/9x + 3/9

y = -2/9x + 1/3

-7x - 9y= -33

-9y = 7x - 33

y = -7/9x + 33/9

y = -7/9x + 11/3

Set equal to each other

-2/9x + 1/3 = -2/9x + 1/3

0 = 0

infinitely many solutions

8 0
3 years ago
Cual es la mediana de los datos en un estudio​
seraphim [82]

Answer:

La mediana de un conjunto de números es el número del medio del conjunto (después de que los números se hayan ordenado de menor a mayor).

Step-by-step explanation:

Digamos que tienes estos números, 4, 7, 2, 9, 7, 6 y 4. primero, los pones en orden de menor a mayor (2, 4, 4, 6, 7, 7, 9), y luego usted determina qué número está en el medio, que es 6.

3 0
3 years ago
A remote-controlled plane is flying 16.5 meters above the ground. The plane dives 8 meters
s2008m [1.1K]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
A waterfall is n times the height of its picture on a postcard.
SOVA2 [1]
H = 7n would be the answer
8 0
3 years ago
38.25, 37.5, 36.75, blank, blank ,
Anestetic [448]

Step-by-step explanation:

38.25, 37.5, 36.75,35.75,34.75

6 0
3 years ago
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