Five less than two times a number is 11. Which equation could be used to find the number?
1 answer:
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Answer:
The quadratic equation is:
Step-by-step explanation:
If the roots of the quadratic equation are "-6" and "6", then it must have the following factors:
Therefore, we can write the equation in factor form as:
where a is a real number constant factor. Now, this equation in standard form will look like:
Therefore, using the information about the leading coefficient being "1" (one), we derive that the constant factor must be "1". The final expression for the quadratic becomes:
Answer:
Perimeter of the rectangle=6x+8 square units
Step-by-step explanation:
Given that area of rectangle is
Area of rectangle=lw square units
Comparing the above equation with the given area we get
lw=(x+3)(2x+1)
Therefore length=x+3 and width=2x+1
To find the perimeter :
Perimeter of the rectangle=2(l+w) square units
Therefore perimeter of the rectangle=6x+8 square units