87+87+81+86+89+83+89= 602. Divided by 7 because that’s how many numbers there were is 86 and that is your mean/average.
Between Steps 1 and 2, the student added 6x to the left hand side, but subtracted 6x from the right hand side.
Answer:
a=110
b=90
Step-by-step explanation:
because as u see A has a straight line and u take awy by 180 which is 110
and for B it looks like a right angle so it woul be 90
The graph below shows the function.
Standard calculation for Perimeter is 2L+2W=P or 2(L+W)=P
As we have the totals for the perimeter at 32m and know the lenght is 6m longer than width we can build an equation to find W.
2(L+W)=Perimeter
2(x+x+6)=32
2(2x+6)=32
2x+6=32/2
2x+6=16
2x=16-6
2x=10
x=10/2
x=5
Now we have the width of 5m. As length is 6m longer than width means we add 6m to 5m to determine length
L=W+6
L=5+6
L=11
To determine if your calculations are correct place your L and W answers into original eqution to determine perimeter
2(11+5)=32
2(16)=32
32=32
Yes, it is found correct. Now to find the Area using the standard formula for Area. Area=L*W or A=LW
A=(11)(5)
A=55
Area = 55sq m
