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Stels [109]
3 years ago
10

A biologist studied the populations of common guppies and Endler's guppies over a 6-year period. the biologist modeled the popul

ations, in tens of thousands, with the following polynomials where x is time, in years.
common guppies: 3.1x^2+6x+0.3

Endler's guppies: 4.2x^2-5.2x+1

what polynomial models the total number of common and Endler's guppies
Mathematics
1 answer:
Mice21 [21]3 years ago
3 0
We can say that total number of guppies would simply be the sum of two polynomials.
To get our answers we need to add those two polynomials. We add polynomials by adding their like terms. Like terms are those that have the same exponent.
3.1x^2+6x+0.3+4.2x^2-5.2x+1=\\=(3.1x^2+4.2x^2)+(6x-5.2x)+(0.3+1)=\\
=7.3x^2+0.8x+1.3
So the total amount of guppies would be modeled using this polynomial:
7.3x^2+0.8x+1.3
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Step-by-step explanation:

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5 0
3 years ago
Please answer also if you answer this one please answer my other one it basically the same
lianna [129]

Answer:

D is the correct answer.

Step-by-step explanation:

<em>Step 1: Write the data</em>

Total number of songs = 100

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<em>Step 2: Match the statement.</em>

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3 years ago
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fiasKO [112]

Hey!

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Solution:

The ratio is FEMALES to MALES.

So its 18/16, 18:16, or 18 to 16.

~Now we need to simplify.

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*Note* When you have a ratio you need to know which comes first. If you put males to females that incorrect. It has to be correct according to the question.

-------------------------------------------------

Answer:

\large\boxed{B)~9~to~8}

-------------------------------------------------

Hope This Helped! Good Luck!

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