Both expressions -3- (-7) and -7- (-3) involve the
difference of two negative numbers.
a. explain when the difference of two negative
numbers is negative and when it is positive.

-3-(-7)=4 ,-7-(-3)=-4

Step-by-step explanation:

+ × += +

- × - = +

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

step-by-step explanation:

if you meant, "on the way from (3, 2) to (3, 14):

x does not change; y increases by 12.

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