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horsena [70]
3 years ago
5

HELP ME PLZ !!! IT'S ALGEBRA

Mathematics
1 answer:
Drupady [299]3 years ago
3 0

Answer:

x = - 8/23

y = 40/23

Step-by-step explanation:

-5x- y = 0

and

-8x+3y = 8

The first step to solve this would be to get what one of the two variables equal. The easiest in this case is y from the first equation.

-5x-y = 0

-y = 5x

y = - 5x

Now you can take this y value and plug it into the section equation.

-8x + 3(-5x) = 8

-8x - 15x = 8

-23x = 8

x = - (8/23)

Once you get the x value you can plug it back into equation one to get y's value

-5*-(8/23)  - y = 0

40/23 - y = 0

y = 40/23

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7n +9 = -1+6(n+4)<br>can someone walk me through this please?​
Ira Lisetskai [31]

Answer:

n = 14

Step-by-step explanation:

7n +9 = -1+6(n+4)

Distribute

7n+9 = -1 +6n+24

Combine like terms

7n +9 = 6n +23

Subtract 6n from each side

7n -6n+9 = 6n-6n +23

n+9 = 23

Subtract 9 from each side

n+9-9=23-9

n = 14

6 0
3 years ago
Which expression illustrates the associative property of addition? (3 19) – 12 = (3 12) – 19 3 (19 – 12) = 3 (19 12) (3 19) – 12
Gre4nikov [31]

Answer:

Associative Property

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5 0
2 years ago
LAM 1 Mod 6 Question 3-2.
RSB [31]

Answer:

The believe the rate of change is 3

Step-by-step explanation:

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4 0
3 years ago
What is the range of the function f(x) = |x| – 3?
Vedmedyk [2.9K]

9514 1404 393

Answer:

  all real numbers greater than or equal to –3

Step-by-step explanation:

|x| has a range of all real numbers greater than or equal to zero, so f(x) = |x|-3 will have a range of ...

  all real numbers greater than or equal to -3

5 0
3 years ago
My homework asked my this ''i am a 3-digit number.If you add 220 to my number,it is 847 what is my number .But im having trouble
Ostrovityanka [42]

Answer: Your answer is 627


Step-by-step explanation: If you add 220 to 627, it becomes 847. You can find out by taking away 220 from 847 because the answer would be the same anyways.


3 0
3 years ago
Read 2 more answers
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