If 82 out of 100 cockroaches are immune to a pesticide after repeated use in an area, how many would be expected to be immune in
2 answers:
Answer:
Hi!
The answer is: 1.804.000 cockroaches are immune.
Step-by-step explanation:
To solve this problem, you can use <em>the rule of three</em>.
100 ----> 2.200.000 cockroaches // If 100% is 2.200.000 cockroaches
82 ----> x cockroaches // then 82% will be immunes.
Now, multiply 82 by 2.200.000 and divide the result by 100:
<u>1.804.000 cockroaches are immune.</u>
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Answer:
The garden can not have area of 700ft^2
Step-by-step explanation:
We are given equation for area as
where
w is the width (in feet) of the garden
now, we are given area =700 ft^2
so, we can set area =700
and then we can solve for w
now, we can use quadratic formula
we can compare and find a,b, and c
a=-1 , b=50 , c=-700
now, we can plug values
We can see that values of w is not real
so, w does not exists when area =700
so, The garden can not have area of 700ft^2