P(0,0) and Q(2a , 0)
Midpoint PQ
x = (x1 + x2)/2 and y = (y1 = y2)/2
Midpoint:
x = (2a +0)/2
= 2a / 2
= a
y = (0+ 0)/2
= 0/ 2
= 0
So midpoint PQ (a , 0)
Answer is the 1st option
(a, 0)
(5*12+9)+(3*12+7)+(4*12+10)=170ft
170/12=14ft+2in
14' 2"
Let's assume
length =l
width =w
we are given
the width of a rectangle is 7 feet less than its length
so, we get

now, we know that
area = length*width

now, we can plug w

we have
Area=170


now, we can factor it

now, we can solve for l


now, we can find width


so, dimensions are

...............Answer
The answer 73 because you is supposed to use your order of operations so in other words your supposed to use PEMDAS