Answer: 15(5z^2+4z+8)
Step-by-step explanation:
You take out the common values
Area of a rectangle is length x width.
Let the width = x
The length would be x +7. ( 7 inches longer than the width)
Area = 20
Set up the formula:
20 = x * x+7
Simplify the right side:
20 = x^2 + 7x
Subtract 29 from both sides:
X^2 + 7x -20 = 0
Solve using the quadratic equation
X = -b + sqrt(b^2 -4ac) / 2a
X = -7 + sqrt(7^2-4(1)(-20) / 2(1) (exact answer)
X = 2.178908 ( as a decimal)
The width is 2.178907 inches (round as needed)
The length would be 9.178907 inches ( round as needed.)
Depending on how you round, when you multiply them together you get approximately 20 square inches.
well the name of the phase for that is called freezing. I think that's we have to look for, maybe not, but I hope I helped
Corinne : b - 6 years old;
her brother : b years old.
The sum: b - 6 + b = 2 b - 6
Answer: B )
It is a point hope it helps you
