$the perimeter of a regular pentagon is 100inches\\l+l+l+l+l=100\\now the combine terms\\5l=100\\l=\frac{100}{5}\\ =20 inches\\now,we solve for the length of each side by dividing both sides by 5.$

3 0

3 years ago

The area of a rectangular knitted blanket is 10x squared minus 11x minus 6. What are the possible dimensions of the blanket? Us

Dmitrij [34]

Answer:

Dimensions of rectangle are $(5x+2)\:and\: (2x-3)\\$

Step-by-step explanation:

Area of rectangular knitted blanket = $10x^2-11x-6$

We need to find the dimensions of blanket.

If we need to find the dimensions, we need to find the factors of area.

Factoring: $10x^2-11x-6$

We will break the middle them -11x

Adding 4x-15x we get -11x

Multiplying 4x and -15x we get -60x^2 (Product of -6 and 10x^2)

Now, finding factors

$10x^2-11x-6\\10x^2+4x-15x-6\\2x(5+2)-3(5x+2)\\(5x+2)(2x-3)\\$

So, factors of $10x^2-11x-6\\$ are $(5x+2)(2x-3)\\$

So, dimensions of rectangle are $(5x+2)\:and\: (2x-3)\\$

6 0

3 years ago