Can someone please help me with this .

Mathematics

2 answers:

schepotkina [342]2 years ago

8 0

- 3x + 4y = - 11
y = 2x - 4

-3x + 4(2x - 4) = -11
-3x + 8x - 16 = - 11
5x = -11 + 16
5x = 5
x = 5/5
x = 1

y = 2x - 4
y = 2(1) - 4
y = 2 - 4
y = -2

Solution: (1, -2)

pav-90 [236]2 years ago

4 0

Let's go ma dude,

-3x + 4y = -11

y = 2x - 4

We know that y = 2x - 4 so we plug it into the first equation:

-3x + 4(2x - 4) = -11

-3x + 8x - 16 = -11

5x - 16 = -11

5x = 5

x = 1

Now we know that x = 1 so we plug it into the first/ second equation:

-3(1) + 4y = -11

-3 + 4y = -11

4y = -8

y = -2

And walla ur answer is reddy!

You might be interested in

7x +4 (-4 x+7 ) =118

anzhelika [568]

First, you would do the parentheses which is multiply 4 to -4x to 7 which leave you with the equation 7x-16+28=118. Then you combine the like terms which gives you 7x+12=118. After that you subtract the number 12 to 118 which the next you divide so the answer is 15.14285714285714 and so on which can be simplified to 15.14 or 15.1

4 0

2 years ago

Write an exponential function to describe the given sequence of numbers, assuming that the first number in the sequence correspo

Fantom [35]

Answer:

$y = 5(6) {}^{x}$