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Elanso [62]
3 years ago
5

Can any of you help me with this

Mathematics
1 answer:
RUDIKE [14]3 years ago
6 0
If f(x)=2x^2+5√(x+2) then:

f(2)=2(2^2)+5√(2+2)

f(2)=2(4)+5√4

f(2)=8+5(2)

f(2)=8+10

f(2)=18

We assume the square root is positive unless otherwise indicated because this is a function and you can have only one y value for each x value to be a function.
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The city of Raleigh has 11700 registered voters. There are two candidates for city council in an upcoming election: Brown and Fe
Vesnalui [34]

Answer:

The sample statistic for the proportion of voters surveyed who said they'd vote for Brown is 0.308.

The expected numbers of voters who would vote for Brown is 3604.

Step-by-step explanation:

The sample statistic is a numerical quantity used to represent a characteristic of a sample. For example, sample mean is a sample statistic representing the average of the sample. Or, sample proportion is a sample statistic representing the proportion of a particular variable in the sample. Or sample variance is a sample statistic representing the variance of the sample.

The sample statistic can be used to estimate the population parameter.

They are known as the point estimate of the parameter.

The sample proportion of a variable <em>X</em> is given by:

\hat p=\frac{X}{n}

It is provided that of the <em>n</em> = 250 registered voters selected, the number of voters who said they would vote for Brown is <em>X </em>= 77.

Compute the sample statistic for the proportion of voters surveyed who said they'd vote for Brown as follows:

\hat p=\frac{X}{n}

  =\frac{77}{250}\\

  =0.308

Thus, the sample statistic for the proportion of voters surveyed who said they'd vote for Brown is 0.308.

Compute the expected number of people of the 11700 registered voters who would vote for Brown as follows:

E(X)=N\times \hat p

         =11700\times 0.308\\=3603.6\\\approx 3604

Thus, the expected numbers of voters who would vote for Brown is 3604.

6 0
2 years ago
Solve the quadratic equation for x.What is one of the roots?
zubka84 [21]

-13 because 6 x 2 = 12 plus x = -13 x represents 1 btw
7 0
3 years ago
Read 2 more answers
Which of the following best describes the Constant Question 1 options: The number in a term before the variable. a letter that r
Serjik [45]

Constant is otherwise called term independent. It should not contain any other letters.

So, a constant without a variable best describes a constant.

5 0
3 years ago
What is the value of the function when x = 2?
VARVARA [1.3K]

Answer: The answer is -2

Step-by-step explanation:

To make this easier, first draw or imagine a vertical line at x=2

Find where the vertical line and the graph intersects.

Draw or imagine that point of intersection.

Now, draw or imagine a horizontal line that goes through the point of intersection.

That horizontal line tells us the the value of the function by passing through that mark that says "-2"

The function's value at x=2 is -2.

(Vote me the brainliest)

5 0
3 years ago
Hurryyyy I’m giving brainliest <br><br> Solve for y.<br> 12 = 3y
horrorfan [7]

Answer:

4

Step-by-step explanation:

3y=12  divide both sides by 3

y=4

5 0
2 years ago
Read 2 more answers
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