The distance around the bulletin board would be 20 feet, because you multiply 6ft 2x and 4ft 2x.
Combine like terms:
-r-10r
We can always add variables as long as they are the same. So we can not add 10x+20y. That's impossible.
We can't add 3r^2+10r. That's also impossible.
However, we have the same variable, r. So we can add -r-10r. And the answer is:
-11r
Hope this helps! :)
Answer:
y = x - 2
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (- 6, - 5) and (x₂, y₂ ) = (- 4, - 4)
m = = , thus
y = x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (- 4, - 4), then
- 4 = - 2 + c ⇒ c = - 4 + 2 = - 2
y = x - 2 ← equation of line
First, expand out the brackets:
y = ax + 6a + ax + a + ax + a + ax - 3a + ax - 5a
Then simplify:
y = ax^2