What’s the perimeter and area of 30ft and 18ft

42 and 54

Step-by-step explanation:

18+18=36

3+3=6

36+6=42(Perimeter)

18x3=54(Area)

h = -9/10 & j = -7/2

Step-by-step explanation:

This what i get :

5h-j=-1

3j-5h=-6

5h-j=-1

-j=-5h-1

J= -5h/-1+ -1/-1

J= 5h +1

Now sub substitute second equation

3j-5h=-6

3(5h+1)-5h=-6

15h+3-5h=-6

15h-5h+3=-6

10h+3=-6

10h= -6-3

10h= -9

H=-9/10

5(-9/10)-j =-1

-4.5-j=-1

-j=-1+4.5

-j=3.5

J=3.5/-1

J= -7/2

Hmmm