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
X=18 and y=10 because they are both 90degree angles therefore all you have to do is solve the equations: 5x=90 and 9y=90.
(a) a rectangular prism
each one has dimensions l = 2.4 ,w = 1.2 / 3 = 0.4 and h = 1.8 / 3 = 0.6 m
(b) total volume of concrete needed is 6 * 2.4 * 0.4 * 0.6 = 3.456 m^3
The answer to your question is number 1
Answer:
6(3x+4y)
18x+24y
Step-by-step explanation: