Answer:
The width of the rectangle is 6cm.
Explanation:
Perimeter=2(length+width)
28=2(8+w)
Distribute 2 into the parentheses
28=16+2w
Combine like terms
28-16=2w
12=2w
Divide both sides by 2
6=w
I hope this helps! Please comment if you have any questions.
Answer:
A
Step-by-step explanation:
It's a solid dot that's going left, so it's less than or equal to. What integer is it on? -2. So it is either less than or equal to -2.
Answer: a, b, c, d
Step-by-step explanation: its not a fraction, its a integer, its positive, and is rational (every integer is rational).
Answer:
-1
Step-by-step explanation:
The given expression is:
We multiply by the reciprocal to get:
We factor so that we can cancel easily:
Cancel the common factors to get:
This simplifies to:
4r - 8 = 5r + 12
4r - 5r = 12 + 8
-r = 20
r = -20 <===
