As the grounds maintenance manager , you need to replace the fence of a 30 foot by 40 foot commercial lot. which of the following shows the calculation for the perimeter of the lot?

a. 30'+40'+30'+40'=140'
b. 30'+40'=70
c. 30'+30'+30'+40'=130'
d. 30'×40'=120'

The perimeter is found by adding all the outside dimensions together.

You are given the length and width,

The perimeter would be 30 + 40 + 30 +40 = 140

The answer is A.

Option A

Step-by-step explanation:

If grounds maintenance manager replaces the fence by 30 feet and 40 feet

then we have to find the perimeter of the commercial lot.

Since perimeter = 2( length + width)

                           = 2( 30 + 40 )

                           = ( 30' + 40' + 30' + 40' )

Option A is the correct option

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3