A rectangular flower garden in Samantha's backyard has 140 feet around its edge. The width of the garden is 30 feet
What is the length of the garden?

length=55

Step-by-step explanation:

p= 140feet

w= 30feet

p = 2 (L+w)

140 = 2×(L+30)

140 = 2L+30

140-30 = 2L

110 = 2l

110÷2 = L

55feet = L

ljn

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct