Select the correct answer.
As the number of samples increases, which value can be used to approximate a population mean?

A.
the standard error of the mean
B.
the standard deviation
C.
the confidence interval
D.
the mean of the sample means

Answer:

The cost of 432 meters square = $21924

Step-by-step explanation:

The length of the plot = l = 27m

The width of the plot = w = 16m

We know that the area of a rectangular object can be determined by multiplying the length and width.

Thus, the area of the rectangular vegetable plot will be:

[tex]A = wl[/tex]

substituting w = 16 and l = 27

A = 16 × 27

A = 432 m²

Therefore, the vegetable plot will be:

A = 432 meter square

Given

The cost of ploughing field of 1 meter square =  $50.75

so

The cost of ploughing field 432 meters square = 50.75 × 432

                                                                               = $21924

Therefore, the cost of 432 meters square = $21924

Answer: 1.5x

Step-by-step explanation:

If the figure dilates by 1.5 times it will increasingly do the same with the perimeter. It keeps the same ratio of 1.5x.

Ex: If a side of the figure was originally 10 and the dilation factor is 1.5 the side now with be 15. This goes for all sides.

Hope this helps!

Answer:

The function that has an inverse that is also a function is [tex]x = 3\cdot y + \frac{9}{4 }[/tex].

Step-by-step explanation:

The only function whose inverse is also a function is the linear function, also named first-order polynomial. The inverse of a linear function is also a linear function. That is:

[tex]y = \frac{1}{3}\cdot x -\frac{3}{4}[/tex]

[tex]\frac{1}{3}\cdot x = y + \frac{3}{4}[/tex]

[tex]x = 3\cdot y + \frac{9}{4 }[/tex]

The function that has an inverse that is also a function is [tex]x = 3\cdot y + \frac{9}{4 }[/tex].

Answer:

y=600-55x

Step-by-step explanation:

Since there is a total of 600, and there is 55 being taken away every hour, there needs to be the x next to the 55, and then that will get you the amount of meals remaining, which is y.

(hope this helps!)

Given:

Consider the expression is

[tex]\dfrac{n^4}{n^{\frac{1}{2}}}[/tex]

To find:

The simplified form of the given expression.

Solution:

We have,

[tex]\dfrac{n^4}{n^{\frac{1}{2}}}[/tex]

Using the properties of exponents, we get

[tex]=n^{4-\frac{1}{2}}[/tex]               [tex]\left[\because \dfrac{a^m}{a^n}=a^{m-n}\right][/tex]

[tex]=n^{\frac{8-1}{2}}[/tex]

[tex]=n^{\frac{7}{2}}[/tex]

Therefore, the simplified form of the given expression is [tex]n^{\frac{7}{2}}[/tex].

Step-by-step explanation:

3 divide 180 230 7 c=mc square that eaquls 2

Answer:

here I drew it digitally Hope it helps

Step-by-step explanation:

The graph of the function is a V-shaped curve.

Given that we need to determine the graph of the function f(x) = 7|x - 4| - 1.

To graph the function f(x) = 7|x - 4| - 1, you can follow these steps:

Start by identifying the key points of the function. In this case, the function involves an absolute value, which means it may change direction at the point inside the absolute value.

Set the expression inside the absolute value equal to zero and solve for x to find this critical point:

|x - 4| = 0

x - 4 = 0

x = 4

So, the critical point is x = 4.

Next, consider the behavior of the function on each side of the critical point.

Choose some values of x less than and greater than 4 and substitute them into the function to determine the corresponding y-values.

Let's choose x = 2:

f(2) = 7|2 - 4| - 1

f(2) = 7|-2| - 1

f(2) = 7(2) - 1

f(2) = 14 - 1

f(2) = 13

Let's choose x = 6:

f(6) = 7|6 - 4| - 1

f(6) = 7|2| - 1

f(6) = 7(2) - 1

f(6) = 14 - 1

f(6) = 13

Therefore, we have the points (2, 13) and (6, 13) on the graph.

Plot the critical point and the points you found on the coordinate plane. Mark them on the x-axis and y-axis.

To graph the absolute value part of the function, draw a V-shaped curve with the vertex at the critical point (4, 0).

The arms of the V-shaped curve will pass through the plotted points (2, 13) and (6, 13).

Extend the arms of the V-shaped curve indefinitely in both directions.

Finally, add the constant term (-1) by shifting the entire graph down by 1 unit. This means that every y-value on the graph should be reduced by 1 unit.

Your completed graph of the function f(x) = 7|x - 4| - 1 should resemble a V-shaped curve with its vertex at (4, -1), passing through the points (2, 12) and (6, 12), and extending infinitely in both directions.

The graph of the function is attached.

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Answer:

Step-by-step explanation:

Rate of change is:

Substitute values with ordered pairs:

Correct option is D. 15

Answer:

A line is shown passing through the ordered pairs (1, 15) and (2, 30) and (3, 45) and (4, 60).

The rate of change of height :---

[tex]slope( = m) = \frac{(60 - 15)}{(4 - 1)} = \frac{45}{3} = 15\\[/tex]

Answer:

6

Step-by-step explanation:

Answer:

Step-by-step explanation:

All the angles that have a cosine of 9/15 are,

⇒ ∠P and ∠X

An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle.

Given that;

Triangle PQR is similar to triangle XYZ.

Hence, We get;

In triangle PQR,

cos P = 9/15

And, In triangle XYZ,

cos X = XZ / ZY

cos X = 9 / 15

Thus, All the angles that have a cosine of 9/15 are,

⇒ ∠P and ∠X

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Answer: y=0.5x-6. She forgot the y-intercept

Step-by-step explanation: use the slope formula to get the slope of 0.5 and just add in the y-intercept of -6 since:

y=mx+b

m=slope

b=y-intercept

Answer:

y = 0.5x - 6

Step-by-step explanation:

[tex]since \: there \: are \: two \: points \: \\ m = \frac{y2 - y1}{x2 - x1} [/tex]

[tex]m = \frac{ - 5 - ( - 7.5)}{2 - ( - 3)} = \frac{2.5}{5} = \frac{1}{2} \: or \: 0.5[/tex]

Standard form of slope-intercept:

y = mx + b

wherein m is the slope and b is the y-intercept.

Let's substitute all values into the equation

[tex]y = 0.5x - 6[/tex]

Answer:

Step-by-step explanation:

Here you go mate

Use PEMDAS

Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction

Step 1

4(x+9)=76  Equation/Question

Step 2

4(x+9)=76  Remove parenthesis by multiplying 4

4x+36=76

Step 3

4x+36=76  Subtract 36 from sides

4x=40

Step 4

4x=40  Divide sides by 4

answer

x=10

Hope this helps

Answer:

i am not pretty sure what is X but the answer is 1/2 i think!

Step-by-step explanation:

Answer:

Opposite of -88 feet

Step-by-step explanation:

the opposite of -88 is positive 88, which means its coming off of the ground. negative would go into the ground.  

Answer:

Ricky had 1205 hits. Pedro had 1481 hits.

Step-by-step explanation:

Set variables.

Set up an equation.

Pedro and Ricky got 2686 base hits total.

Pedro had 276 more hits than Ricky.

Plug p into your first equation.

Combine like terms.

Divide both sides by 2 to isolate r.

You now know that Ricky had 1205 hits. Pedro had 276 more hits than Ricky. Therefore,

Pedro had 1481 hits.

Check your work.

total hits = Pedro's + Ricky's

2686 = 1481 + 1205

2686 = 2686

Pedro's hits = Ricky's hits + 276

1481 = 1205 + 276

1481 = 1481

Your answers are correct.

-20 + -3

-10 + -13

-15 + -8

-5 + -18

I hope this helps!

Answer:

O negative

Step-by-step explanation:

Answer:

Negative

Step-by-step explanation:

The slope is going diagonally to the bottom right which makes it negative.

A slope would be undefined if it went straight up.

A slope would be zero if it went horizontally.

A slope would be positive if it were going up (opposite of negative!)

Hope this helps!

Step-by-step explanation:

The given inequality is :

x – 2y > 16

We need to draw the graph of this inequality.

If x = 0,

-2y>16

y>-8

If y = 0,

x>16

So, we can draw the graph as follows :

Answer:

7/9

Step-by-step explanation:

Answer:

1,897.19

Step-by-step explanation:

Answer: $ 1959.66

A = Accumulated Amount

P = Principle / first contribution  ($10)

PMT = Regular contributions / additional money added to investment)  ($10)

r = Interest rate  (9% / 0.09)

n = compounding frequency per year (12 = monthly, 4 = quarterly, 2 = semi-annually, 1 = annually ) (12)

t = number of years (10)

Plug the numbers into this formula and your calculator should get 1959.66

Formula: A = P (1 + r/n) + PMT (1+r/n) to the power of nt -1

                                               (r/n)

Answer:

14.62=d divided by 4

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The statement that best describes the solutions to the given system of equations - There are two possible solutions, but only one of the solutions is viable.

"It is a point or set of points (x, y) that satisfies all the constraints of the given problem."

"It is a solution that makes sense in context as well as mathematically. "

"It is a set of equations for which we find a common solution."

For given question,

Three classmates want to know when a tennis ball and a balloon will reach the same vertical height above the ground.

Given that, x represents the time, in seconds, since the timer starts.

The graph shows the vertical height of the tennis ball and balloon, in feet.

The solution to the system of equations are the points at which the graphs to the system of equations intersect each other.

From the given graph we can observe that,

the graphs intersect at points having the x values near x = 1.2 and x = -3.2 This means, there are two possible solutions.

But we know that the negative value of x (time) is not viable.

Therefore, the statement that best describes the solutions to the given system of equations - There are two possible solutions, but only one of the solutions is viable.

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Answer:

Hope this helps xD

Step-by-step explanation:

Answer:

y=3x-1

y-inter(0,-1)

Step-by-step explanation:

Answer:

y=3x-1

Step-by-step explanation:

Answer:

B. 1,500’

Step-by-step explanation:

Given;

dimension of the rectangular house, = 35’ x 40’

The actual total linear footage of lumber needed = 35’ x 40’ = 1,400'

The rough estimate should be greater than the actual estimate in 100s;

rough estimate = 1,400' + 100' = 1,500'

Therefore, the rough estimate of the total linear footage of lumber needed is 1,500'.

Answer:

the data shows a linear relationship because the rate of change in decreasing

Step-by-step explanation:

hope it helps