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polet [3.4K]
3 years ago
5

What equation best models this data? (Use y to represent the population in millions, and t to represent the year, assuming that

2010 is t = 0.)

Mathematics
1 answer:
lapo4ka [179]3 years ago
5 0

Answer:

y = 2.31x + 309.35

Step-by-step explanation:

Whenever you are checking for a best fitting equation you want to check if it has a constant slope.  If it does then the relation is linear and super easy.

So, since the t values are increasing by the same amount you want to see if the y values are  too.  And they are, each population entry is increasing by 2.31, this is the slope.  

Also, keep in mind you can caluclate slope with the equation \frac{y_2-y_1}{x_2-x_1}  here x is replaced by t though.

Now, since we know it's linear and we know the slope we can find the equation with the formula  y - y1 = m(x - x1) where again, x is replaced by t and m is the slope 2.31

I am just going to use the first point.  so x1 = t1 = 0

y - 309.35 = 2.31(x-0)

y = 2.31x + 309.35

Let me know if there was something you didn't understand.  

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A farmer's land is separated into sections of size 2 1/5 acres. Suppose there are 2 2/9 such sections. How many acres of land do
Margarita [4]

Answer:

\frac{44}{29}

Step-by-step explanation:

The computation of the number of acres of land does the farmer owns is as follows:

Given that

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And, the sections would be 2 \frac{2}{9}

So,

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Now just multiply the denominator and numerator straight across

= \frac{11 \times 20 }{5 \times 29} \\\\= \frac{220}{145} \\\\= \frac{44}{29}

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3 years ago
If sine theta equals negative square root of three over two and pi less than theta less than three times pi over two, what are t
Romashka-Z-Leto [24]

Cosine theta equals the negative square root of three over two; tangent theta equals the negative square root of three over three is the correct answer.

<h3>What is angle measurement?</h3>

An angle measure is the measurement of the angle created by two rays or arms at a shared vertex in geometry. A protractor is used to measure angles in degrees (°).

Given data;

sin(1/2) = π/6

The value of the trignometric function are;

cos(π/6) = (√3)/2

tan(π/6) = 1/√3 = (√3)/3

In the second quadrant, where the cosine and tangent signs are both negative, is the angle of interest.

θ = 5π/6

cos(5π/6) = -(√3)/2

tan(5π/6) = -(√3)/3

Hence. cosine theta equals the negative square root of three over two; tangent theta equals the negative square root of three over three is the correct answer.

To learn more about the angle measurement, refer to the link;

brainly.com/question/14684647

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