Solve the system of equations: 3x + 2y = 4 3x + 6y = -24

Mathematics

1 answer:

Dimas [21]3 years ago

7 0

Answer:

y=-7

x=6

Step-by-step explanation:

If you subtract 3x from both equations, you get -4y=28, which means that y=-7. When you substitute it back in, you get the x-value of 6.

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Simplify expression 8- ( 8-2) \ 3

Paladinen [302]

Answer:

Step-by-step explanation:

In order to solve this we must use order of operations or PEMDAS.

Parentheses:

First perform operations within parentheses. In this case, do 8-2.

Now we have 8 - 6 / 3.

Exponents:

There are no exponents.

Multiplication or Division:

Divide 6 by 3.

Now we have 8 - 2.

Addition or Subtraction:

Subtract 8-2.

The answer is 6

5 0

3 years ago

I need help please so if you could help that would be nice. Also i will make brainliest

timurjin [86]

No it is not a function. You have to be able to write y=mx+b

5 0

3 years ago

2) -7x + 5y=10<br> 4x - 5y=-10

bezimeni [28]

To solve this, the problem is solvable by elimination. So you see how the 5y and -5y cancel out? You basically add those two and you add the -7x and 4x and 10 and -10 leaving you with -3x=0. Dividing by each side gives you x=0. Then, plug 0 in for x in -7x+5y=10. Giving you

-7(0)+5y=10.

0+5y=10

5y=10
Divide by 5 on each side giving you y=2. So your answer is (0,2).