Answer:
The proposed equation is solved as follows:
2X + 7 = 21
2X = 21 - 7
2X = 14
X = 14 / 2
X = 7
The value of X is 7.
A first degree equation is an algebraic equation in which each term is either a constant or a product of a fixed term on a single variable. Therefore, this equation is a first degree one, since it only has a single variable, which is X.
Answer:
153.94 cm²
Step-by-step explanation:
Area of circle = πr² = π(7)² = 49π = 153.94 cm²
The first to find the length of each side, we have to find the value of x :
<span>
<u>Solution First side :</u></span>
<span>
<u>Solution Second Side :</u></span>
<span>
<u>Solution Third Side :</u></span>
The area of the rectangle is the product of its base and height
The height of the rectangle is 4x - 2 units
<h3>How to determine the height?</h3>
The given parameters are:
Area = 4x^2 - 2x
Base = x
The area of the rectangle is:
Area = Base * Height
This gives
4x^2 - 2x = x * Height
Divide through by x
4x - 2 = Height
Rewrite as:
Height = 4x - 2
Hence, the height of the rectangle is 4x - 2 units
Read more about areas at:
brainly.com/question/24487155
3.14 is how you write it in decimal form for the calculator
