Answer:
<em>20 + 16 = 36</em>
Step-by-step explanation:
The conjecture: "The sum of two positive even integers is always an odd integer" can be easily be proven false with a counterexample.
Pick A=20 and B=16, both are positive even integers.
The sum of both A + B = 36 is an even integer. This is a counterexample because being even is the contrary of being odd.
Counterexample: 20 + 16 = 36
In fact, the conjecture is always false, since there cannot be found any pair of positive integers whose sum is odd.
Other possible counterexamples are:
10 + 8, 700 + 40, 12 + 14, etc.
Answer : The number of larvae is greatest at 5 degrees Celsius.
Given the equation
x is the temperature of water in degrees Celsius, and y is the number of insect larvae in the water
Peak of the graph is the vertex
Now we find out the vertex from the given equation
To find x coordinate of vertex we use formula x=
a= -2, b= 20
So x=
x =
x = 5
Now we find out y
Plug in 5 in the place of x
y= 450
Vertex is (5,450)
It means the number of larvae reaches the maximum of 450 at 5 degree Celsius
Hence , the number of larvae is greatest at 5 degrees Celsius.
D is equivalent because brackets don’t change anything here
Wait bro you already got it