How would you complete the square on the left side of this equation? x^2-6x=15 A. Add 6 to both sides of the equation. B. Subtra
1 answer:
Answer:
C. Add 9 to both sides of the equation.
Step-by-step explanation:
Given
Required
Complete the squares
We have:
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Take the coefficient of -6 i.e. -3
Square it (-3)^2 = 9
Add 9 to both sides
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<em>Hence, C is correct</em>
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Answer:
(B)
Step-by-step explanation:
we can use formula
where
Po is the initial population
r is the growth rate
t is the time in months
We are given
initial population of insects
so, Po=6
The scientists find that the insect population, x, is growing exponentially 20% per month
so, r=0.20
now, we can plug these values
there to be a population of 477 insects
so, P(t)=477
now, we plug it
and we get
