Answer:
x=4
Step-by-step explanation:
1/3 (20 + x) = 8
multiply both sides of equation by reciprocal of 1/3
3/1 * 1/3 (20 + x) = 8 * 3/1
20 + x = 24
subtract 20 from both sides
x = 4
Answer:3(4x^2-9y^2)
Step-by-step explanation:
The answer to this is 200,000.
Answer:
14t + 5.1
General Formulas and Concepts:
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define Expression</u>
5.1 + 8.8t - 2.2t + 7.4t
<u>Step 2: Simplify</u>
- Combine like terms (t): 14t + 5.1
Answer:
The expression that represents the perimeter of the rectangle is "12*x + 18", where "x" is the length of the rectangle.
Step-by-step explanation:
In order to solve this question we were given an expression that relates both dimensions of the rectangle. This expression in a mathematical form where "x" is the length and "y" is the width is shown bellow:
y = 9 + 5*x
The perimeter of a rectangle is given by:
perimeter = 2*length + 2*width
perimeter = 2*x + 2*(9+5*x)
perimeter = 2*x + 18 + 10*x
perimeter = 12*x + 18
The expression that represents the perimeter of the rectangle is "12*x + 18", where "x" is the length of the rectangle.