What is the perimeter of rectangle that has a length of 8x - 12 and a width of 3x + 15?

Area of the rectangle is  

10

x

2

−

9

x

−

9

Explanation:

Area of rectangle is the product of its length and width / breadth.

As length of given rectangle is  

5

x

+

3

and its width is  

2

x

−

3

,

is area is  

(

5

x

+

3

)

(

2

x

−

3

)

=  

5

x

(

2

x

−

3

)

+

3

(

2

x

−

3

)

=  

10

x

2

−

15

x

+

6

x

−

9

=  

10

x

2

−

9

x

−

9

Step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

yes

step-by-step explanation: