Which of the following is an advantage of an observational study over a sample survey? A)Observational studies are not dependent
1 answer:
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We are told that $168.00 represents 8% of the contract price; therefore,we know that
original price *( 8/100) = $168.00
Now, writing out "original price" is a bit space-consuming; therefore, we will just rename it and say
original price = OP
Then, our equation above can be written as
We solve for OP (original price) by multiplying both sides by 100 and then dividing by 8. This gives us
Hence, the original contract price is $2100.
Answer:
Area of the rectangle = 700 - 2w²
Step-by-step explanation:
In the picture attached one side of the rectangle is Barn.
Two perpendicular sides of the barn are width 'w' and one parallel side to the barn is 'l'.
Jamal has the fencing having length = 700 feet
So, to cover three sides of the rectangle length of wire required = (2w + l) feet
This length should be equal to the length of the wire, which is to be used to cover these three sides.
(2w + l) = 700
l = 700 - 2w ------(1)
Area of the rectangle = lw
By replacing the value of l from equation 1
Area = w(700 - 2w)
Area = 700w - 2w²
