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dalvyx [7]
2 years ago
15

Will Mark Brainliest

Mathematics
1 answer:
Mademuasel [1]2 years ago
4 0

we are given with the data of a parabola with vertex at (2, 2) and directrix at y  = 2.5. the formua should be ax^2 + b x + c = y because of the directrix. 

(x-h)^2 = 4a (y-k)

(x-2)^2 =4a (y-2) 

a is the equidistant distance from focus to vertex and from vertex to directrix that is equal to -0.5

then the  answer is 

(x-2)^2 =-0.5*4 (y-2) 

x2 - 4x + 4 = -2y +4

x2-4x+2y = 0

answer is C

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A population is increasing 4% per year. Identify the growth factor that could be used to model the population.
polet [3.4K]

The growth factor that could be used to model the population will be 1.04. Then the correct option is D.

<h3>What is an exponent?</h3>

Consider the function:

y = a (1 ± r) ˣ

Where x is the number of times this growth/decay occurs, a = initial amount, and r = fraction by which this growth/decay occurs.

If there is a plus sign, then there is exponential growth happening by r fraction or 100r %.

If there is a minus sign, then there is exponential decay happening by r fraction or 100r %.

The population is increasing by 4% per year.

Then the growth factor that could be used to model the population will be

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Growth factor = (1 + 0.04)

Growth factor = 1.04

The growth factor that could be used to model the population will be 1.04.

Then the correct option is D.

More about the exponent link is given below.

brainly.com/question/5497425

#SPJ1

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