The rectangle below has an area of x^2−4x−12, squared, minus, 4, x, minus, 12 square meters and a length of x+2x+2 x+2 x, plus,
2 meters. What expression represents the width of the rectangle?
1 answer:
Answer:

Step-by-step explanation:
we know that
The area of rectangle is given by the formula

we have


substitute

Solve the quadratic equation of the left side
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
therefore
substitute in the formula of area

solve for W
simplify

You might be interested in
It is both equations are equal to -0.076.
10:20 and 15:30. Hope that helped!
Step-by-step explanation:
3200 = 100%
2848 = ?%
2848 ÷ 3200 then × 100
= 89%
so 2848 = 89%
Answer: 1 : 3
Step-by-step explanation:
The yellow tiles form 25% of the whole pattern.
The red tiles will therefore form 75% of the whole pattern.
Ratio of Yellow tiles to Red tiles is;
25 : 75
Simplest form. Divide each side by 25;
= 1 : 3