What number should be added to the expression x2 + 4x to change it into a perfect square trinomial?
a: 1
b: 8
c: 2
d: 4

the answer is D:4

Step-by-step explanation:

incomplete question. how do you expect anyone to you when you do not post the question in its entirety?

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet