Which of the equations are true identities? (x^2+2y)(x^2-3y) A. }(x^2+2y)(x^2-3y)=x^4-6y^2

B. }&k^3-r^3=(k^2+r)(k-r^2)

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

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

answer: check all that apply, where the options?

step-by-step explanation: