is the expression that represents the perimeter of rectangle
<em><u>Solution:</u></em>
Let "x" represent the width of rectangle
Given that length of rectangle is 3 units shorter than one-third of the width x
length of rectangle = one-third of the width x - 3

<em><u>The perimeter of rectangle is given as:</u></em>
<h3>perimeter of rectangle = 2(length + width)</h3>
Substituting the known values we get,

Thus perimeter of rectangle is 
Thus option 1 is correct
The value of a is 9, the correct option is B.
Given
Hank’s teacher asked him to verify that the product (y−3)(y2+3y+9), is a difference of cubes.
<h3>Quadratic equation;</h3>
The equation which has the highest degree is 2 is called quadratic equation;

Where a, b, and c are the constants.
The given polynomial is;

On multiplying the terms;

On comparing;

Hence, the value of a is 9.
To know more about polynomial click the link is given below.
brainly.com/question/6169816
Answer:
x+y=2
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-3-10)/(5-(-8))
m=-13/(5+8)
m=-13/13
m=-1
y-y1=m(x-x1)
y-10=-1(x-(-8))
y-10=-(x+8)
y-10=-x-8
y=-x-8+10
y=-x+2
y-(-x)=2
y+x=2
x+y=2