What changes about the numbers when you go from one to the next, and what stays the same? Here, it looks like you start with the number 44, but how do you change the number from one to the next?

5 0

3 years ago

Read 2 more answers

-3x+5y=4 and x+y=-4 find the value of x and y

shusha [124]

Answer:

x = -3, y = -1

Step-by-step explanation:

Solve by substitution:

First make the second equation in terms of y:

y = -x-4

Next, since we found what y is, plug it into the first equation and solve for x:

-3x + 5(-x-4) = 4 Plug in

-3x - 5x - 20 = 4 Distribute

-8x - 20 = 4 Simplify

-8x = 24

x = -3

We have found that x = -3. To find y we need to plug x back into any of the equations. Let's do equation #2.

(-3) + y = -4 Plug in

y = -1 Simplify

So, y = -1 and x = -3. Let's check this in the first equation to make sure it is correct:

-3(-3)+ 5(-1) = 4 Plug in

9 + (-5) = 4 Simplify

9 - 5 = 4

4 = 4

Since both sides are equal that means we are correct!

Hope this helps!!

6 0

3 years ago