2/3=x/12
Use cross multiply
2*12=3*x
24=3x
Divided both side by 3
24/3=3x/3
x=8
Check:
2/3=x/12
Substitute x with 8
2/3=8/12
2/3=(8/4)/(12/4)
2/3=2/3. As a result, x=8. Hope it help!
The formula is y-y0=m(x-x0)
So we plug in the Y's and the X's given:
-5-9=m(0-(-3)) >>>> -14=m(3)>>>>> m=-14/3
The next formula is y=mx+b , choose any point to use for X and Y: I'm gonna choose (0,-5)
-5=-14/3(0)+b >>> b=-5
Your formula is: y=-14/3x-5
Answer:
15% markdown
Step-by-step explanation:
To find the percent markdown
Take the original price minus the new price
975-828.75
146.25
Divide by the original price
146.25/975
.15
Change to percent form
15% markdown
I was really scared when I first looked at this ... I thought it was gonna
keep going to infinity, and I don't know how to handle those.
But this fraction only has 2 or 3 levels to it, so I think we can do it without
too much trouble.
The secret is: You definitely have to start at the bottom and work
your way up.
-- See the bottom level ? It's 2 + 1/3 .
-- Change that number all to an improper fraction, and it's 7/3 .
The reason I want to do that is because it's the denominator of the
next fraction up, and that fraction is (1 over it).
-- The denominator of the next fraction up is 7/3, so 1 over it is just 3/7.
-- Now, before we go up to the top level, it looks like we're supposed to
add the big black ' 1 ' to where we are now ... to the 3/7 .
' 1 ' = 7/7 . Add that to the 3/7, and we have 10/7 .
All we have left now, out of the whole pile, is (1 over 10/7).
And that's just <em>7/10</em>.
