2x^3-42x-40=0
2x^3-42x=40
2x(x^2-21)=40
a. 2x=40=>x=20
b. x^2=21+40=>x^2=61=>x=+-(radical(61)
Answer:
-
- Dimensions of the flag:
- Area of the flag:
Step-by-step explanation:
<em><u>The missing figure of the exercise is attached.</u></em>
<em><u /></em>
We know that the perimeter of the triangle is given by:
Where "s" is the side lenght of the triangle.
Solving for "s", we get:
Therefore, if the perimeter of the triangle is 126 inches, its side length is:
Since , we know that "s" in feet is:
The area of a rectangle can be calculated with this formula:
Where "l" is the lenght and "w" is the width
We can observe in the figure that the lenght and the width of the flag are:
Then, the dimensions of the flag are:
And the area is:
Answer:
Answer would be 89/100
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given
Required
Rewrite with fewer terms
Open Bracket
Collect Like Terms
<em>Hence, the equivalent is 20 - 5r</em>