Solve the system of equations and choose the correct ordered pair

4x+7y= 47

5x-4y= -5

A. (3,5)

B. (4,5)

C. (3,7)

D. (4,7)

Question

Solve the system of equations and choose the correct ordered pair

4x+7y= 47

5x-4y= -5

A. (3,5)

B. (4,5)

C. (3,7)

D. (4,7)

Astro · Answer

Again, Do you know what to do first?

karissafrazier · Answer

tbh not really- not even my fwb knows how to do this

VIBE · Answer

@VIBE wrote:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 4*x+7*y-(47)=0 Solve 4x+7y-47 = 0 Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK). "y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis. In this formula : y tells us how far up the line goes x tells us how far along m is the Slope or Gradient i.e. how steep the line is b is the Y-intercept i.e. where the line crosses the Y axis The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 4x+7y-47 = 0 and calculate its properties Notice that when x = 0 the value of y is 47/7 so this line "cuts" the y axis at y= 6.71429 y-intercept = 47/7 = 6.71429 When y = 0 the value of x is 47/4 Our line therefore "cuts" the x axis at x=11.75000 x-intercept = 47/4 = 11.75000 Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 6.714 and for x=2.000, the value of y is 5.571. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 5.571 - 6.714 = -1.143 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN) Slope = -1.143/2.000 = -0.571 1. Slope = -1.143/2.000 = -0.571 2. x-intercept = 47/4 = 11.75000 3. y-intercept = 47/7 = 6.71429

karissafrazier · Answer

i hate math...............

VIBE · Answer

Why?

karissafrazier · Answer

always so complicated

bigjojo88 · Answer

1 Solve for xx in 4x+7y=474x+7y=47.
x=\frac{47-7y}{4}
x= 
4
47−7y
​

2 Substitute x=\frac{47-7y}{4}x= 
4
47−7y
​	
  into 5x-4y=-55x−4y=−5.
\frac{5(47-7y)}{4}-4y=-5
4
5(47−7y)
​	
 −4y=−5

3 Solve for yy in \frac{5(47-7y)}{4}-4y=-5 
4
5(47−7y)
​	
 −4y=−5.
y=5
y=5

4 Substitute y=5y=5 into x=\frac{47-7y}{4}x= 
4
47−7y
​	
 .
x=3
x=3

5 Therefore,
\begin{aligned}&x=3\&y=5\end{aligned}
​	
  
x=3
y=5
​

karissafrazier · Answer

can i get a reply lock on this?