The function f x =x2 +3x-10 models the area of a rectangle. a: describe the length and width of the rectangle in terms of x b: what is a rectangle in terms of x

A .

B. domain of here is all values of x > 2 .

Step-by-step explanation:

Correct question is : the function models the area of a rectangle. a: describe the length and width of the rectangle in terms of x b: what is a domain for above function in relation to rectangle . Let's solve:

a: describe the length and width of the rectangle in terms of x

Let's factorise :

⇒

⇒

⇒

Since , ⇒ So

.

b: what is a domain for above function in relation to rectangle

Since area is always > 0 , and (length , breadth)>0 So,

⇒ Therefore, domain of here is all values of x > 2 .

x/3-10=8

x/3=18

x=48

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,