PLEASE HELP IM SUPER CONFUSED!! WILL CROWN BRAINLIEST

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

8 0

Start with the given expression:
$\frac{4x+6y}{2y}=8$

We want $y$ so lets isolate it. Start by multiplying both sides by $2y$ :
$4x+6y=16y$

And then group similar terms:
$4x=10y$

Now we can substitute our know value of $x=5$ :
$4(5)=10y$

And then solve for $y$ :
$4(5)=10y$
$20=10y$
$\frac{20}{10}=y$
$y=2$

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Read 2 more answers

How do i solve and graph <img src="https://tex.z-dn.net/?f=5x-%20y%20%5Cgeq%205" id="TexFormula1" title="5x- y \geq 5" alt="5x-

Alborosie

One way is to make it into slope intercept form which is
y=mx+b
m=slope
b=y intercept or where the line will go though the y axis
treat the equal to or greater than sign as equals for now

5x-y=5
subtract y from both sides
5x=5+y
subtract 5
5x-5=y
put the sign back in
5x-5 ≥ y
reverse
y ≤ 5x-5

one way is to subsitute values and get values out so
if x=1 then
y≤5(1)-5
y≤0
(x,y)
(1,0)
(2,5)
(3,10)
(4,15)
(0,-5)

plot the points
then the ≤ sign
since ther is an underline, that means that the points are included so draw a solid line through the points

then figure out which side to shade on
the easy way is, is the point (0,0) a solution?
subsitute
0 ≤ 5(0)-5
0 ≤ -5
false so we shade the section that does not include the point (0,0) in it
the graph would look like this attachment