Answer: 
Step-by-step explanation:
By definition, the perimeter of a rectangle is:
Where "l" is the lenght and "w" is the width.
If you solve for "l":
In this case, you know that the following expression represents the perimeter of the rectangle:
And the width of that rectanle is represented wih this expression:
Therefore, based on the explained above, you can conclude that the lenght of that rectangle is given by:
Finally, simplifying the expression, you get:
Answer:
there are no other expressions....
Step-by-step explanation:
Perimeter:
The perimeter of the triangle is the sum of its sides.
We have then:
P = 8 + 12 + 10
P = 30 units
Semi-perimeter:
In geometry, the semiperimeter of a polygon is half its perimeter.
s = P / 2
s = 30/2
s = 15 units.
Area:
Knowing the semiperimeter and the sides, the area is:
A = root (s * (s-a) * (s-b) * (s-c))
where,
s: semi-meter
a, b, c are sides.
A = root (15 * (15-8) * (15-12) * (15-10))
A = 39.68626967
A = 40 units ^ 2
Answer:
Plus Sign (+)
Minus Sign (-)
Step-by-step explanation:
Each part of an algebraic expression which are separated by plus sign (+) or minus sign (-).
Note that the division sign (÷) or multiplication sign (×) does not separate the terms of an algebraic expression.
[RevyBreeze]
Answer:
4S = 33
Step-by-step explanation:
To find the side length of one side, the perimeter has to be divided by 4 since a square has four sides.
