In 7th grade:
red-hair students =58
another color hair students =609
In 8th grade:
red-hair students =60
Let's assume
another color hair students =x
now, we are given
The numbers of red-haired students in 8th grade are proportional to the numbers in 7th
so,
now, we can solve for x
we get
we get
so, students have another color hair in 8th grade is 630.........Answer
Answer:
its basically just x=4
Step-by-step explanation:
{ 3x-2y=2
{ y=2x+8
{ -2y=2-3x
{ y=2x+8
{ y= -1+3/2x
{ y= 2x+8
-1+3/2x = 2x+8
x=-18
y= 2(-18)+8
y= -28
(x,y) = ( -18,-28)
——
Solution check
{ 3(-18)-2(-28)=2
{ -28=2(-18)+8
{ 2=2
{ -28=-28
The answer for this would be 4n-20 or n-5
Answer:
<h2>x = 1</h2>
Step-by-step explanation:
Look a t the picture.
The triangles on the picture are similar.
Therefore the sides are in proportion:
<em>cross multiply</em>
<em>divide both sides by 40</em>