Plzzz someone help me with this problem I’m at a 69 I really want to get to 70!!!

Answer:

The standard deviation is a measure of the amount of variation or dispersion of a set of values.

The standard deviation is a statistic that describes the degree of volatility or dispersion in a set of numerical values.

The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers.

While a high standard deviation suggests that the values are dispersed over a wider range, a low standard deviation suggests that the values tend to be close to the mean (also known as the anticipated value) of the collection.

The lowercase Greek letter (sigma), for the population standard deviation, or the Latin symbol s, for the sample standard deviation, are most frequently used in mathematical texts and equations to indicate standard deviation. Standard deviation may be written as SD.

Therefore, the standard deviation is a statistic that describes the degree of volatility or dispersion in a set of numerical values.

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Answer:

Below

Step-by-step explanation:

Set up a ratio:

7 is to 9   as  8 is to ?

7/9 = 8/?

? = 8 * 9/7 = 72/7  = 10  2/7

Answer:

rational number

Step-by-step explanation:

as the denominator is not zero

Answer:

No less than 42 lessons

Step-by-step explanation:

To find the total numbers of hours needed to teach, divide the total amount of money needed by the amount of money made an hour.

$894.60/$21.30 = 42

Answer: \(f(x)=15500(1.0375)^x\)

Step-by-step explanation:

The exponential model for growth is given by :-

\(f(x)=A(1+r)^x\), where A = initial value , r = growth rate (in decimal), x = time  (in years).

Given: A= 15,500      r= 3.75% = 0.0375

The exponential model for the growth of this population will be :

\(f(x)=15500(1+0.0375)^x\\\\\Rightarrow\ f(x)=15500(1.0375)^x\)

hence, the required model: \(f(x)=15500(1.0375)^x\)

Given: A sphere with a radius of 6.891 cm.

Required: To determine the volume of the sphere.

Explanation: The volume of a sphere with radius r is given by the formula-

Substituting the value into the formula as-

Further solving gives the volume as-

Final Answer: The volume of the sphere is 1369.983 cubic centimeters (approx).

The 2 unshown angles in the pentagon adds up to 180 degrees because consecutive interior angles theorem for parallel lines.

Interior angle sum of pentagon is 540 degrees.

So

2y+3y+135+180=540

5y+135=360

5y=225

y=45

Done!

Answer:

B. [3, 5]

Step-by-step explanation:

The range of a graph are the y-values that are plotted on the vertical axis (y-axis). In order words, the range values, are the possible set of output values of that are plotted on the vertical axis on the graph.

"[ ]" is usually used to denote the possible set of values.

Therefore, the range of the given graph, as we can see from the y-axis, include values from 3 to 5. Therefore, the range of the graph is [3, 5].

Answer: Multiply 93 by 804 and that will give you

74772x

Multiply 12 by 880 and that will give you

10560x

Exact Form:

1977

Decimal Form:

28.14285714…

Mixed Number Form:

2817

Multiply 687 by 98 that will give you

67326  

Multiply 936 by 39 and that will give yoou

36504x

Step-by-step explanation:

To find the surface area of the figure, we need to consider the individual surfaces and add them together.

First, let's identify the surfaces of the figure:

The lateral surface area of the larger prism (excluding the base)

The two bases of the larger prism

The lateral surface area of the smaller prism (excluding the base)

The two bases of the smaller prism

The lateral surface area of a prism is given by the formula: perimeter of the base multiplied by the height.

The bases of the prisms are rectangles, so their areas can be calculated by multiplying the length by the width.

To find the missing prism's surface area, we need to consider that it is a smaller prism nested inside the larger prism. The lateral surface area and bases of the missing prism should also be included.

Once we have calculated the individual surface areas, we add them together to find the total surface area of the figure.

Without specific measurements or dimensions of the figure, it is not possible to provide a numerical answer. Please provide the necessary measurements or dimensions to calculate the surface area.

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To find a parametric equation of the line of intersection between the planes x+y=4 and 2x-y-z=2, we can set up a system of equations with the variables x, y, and z. Answer : The parametric equations x = 4 - t, y = t, z = -6 + 3t represent the line of intersection between the planes x+y=4 and 2x-y-z=2, where t is a parameter.

1. Start by solving one of the equations for one variable. Let's solve the first equation, x+y=4, for x in terms of y: x=4-y.

2. Substitute this expression for x into the second equation: 2(4-y)-y-z=2. Simplify: 8-2y-y-z=2.

3. Rearrange the equation to isolate z: -3y-z=-6. Solve for z: z=-6+3y.

4. Now we have expressions for x and z in terms of y. We can write the parametric equations using the parameter t:

  x = 4-t

  y = t

  z = -6+3t

The parametric equations x=4-t, y=t, z=-6+3t represent the line of intersection between the planes x+y=4 and 2x-y-z=2, where t is a parameter that varies along the line.

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Answer:

Oliver's living expenses- 520(.1)=$52

Answer: -4.5

Step-by-step explanation:

2(x - 9) = 9 / (-1/3)

Distribute the "2" to the (x - 9)

Divide 9 / (-1/3)

2x - 18 = -27

Add "18" to both sides

2x = -9

Divide by 2

x = -4.5

Answer:

Option C; 3x - y = -27 and x + 2y = 16

Step-by-step explanation:

1. Let us consider the equation 21x - y = 9. In this case it would be best to keep the equation in this form, in order to find the x and y intercept. Let us first find to y - intercept, for the simplicity ⇒ 21 * ( 0 ) - y = 9 ⇒ y = - 9 when x = 0. Now if we take a look at the first plot of line q, we can see that the x value is -9 rather than the y value, so this equation doesn't match that of line q. This would eliminate the first two options being a possibility.

2. Now let us consider the equation 3x - y = -27. Let us consider the x-intercept in this case. That being said, ⇒ 3x - ( 0 ) = -27 ⇒ 3x = -27 ⇒ x = -9 when y = 0. As we can see, this coordinate matches with one of the coordinates of line q, which might mean that the second equation could match with the equation for line v.

3. To see whether Option 3 is applicable, we must take a look at the 2nd equation x + 2y = 16. Let us calculate the y - intercept here: ( 0 ) + 2y = 16 ⇒ 2y = 16 ⇒ y = 8 when x = 0. Here we can see that this coordinate matches with that of the second coordinate provided as one of the points in line v. That means that ~ Answer: Option C

Answer:

each teammate contributed 1.43 sorry but i do not know how many members they have because my head hurts

Input value produces the same output value for the two functions on the graph is x = -2, So correct option is B.

A graph is a visual representation of data or a mathematical function. It typically consists of a set of points or plotted coordinates that are connected by lines or curves. The purpose of a graph is to display the relationship between two or more variables, making it easier to understand and interpret the data.

There are several types of graphs, such as:

Line graphs, which are used to track changes over a continuous interval or time period.

Bar graphs, which are used to compare different values or quantities.

Pie charts, which are used to show the proportion of different categories in a whole.

Scatter plots, which are used to show the relationship between two variables.

histograms, which are used to show the frequency distribution of a variable.

This is the point at which the two functions intersect, indicated by the coordinates (-2,1).

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The measure of angle ABC is 64°.

The angle bisector in geometry is the ray, line, or segment which divides a given angle into two equal parts.

Given that, BM bisects ∠ABC and ∠MBC=32°.

Here, ∠ABC=∠MBC+∠MBA

Since, BM bisects ∠ABC, ∠MBC=∠MBA

∠ABC=∠MBC+∠MBC

∠ABC=2∠MBC

∠ABC=2×32°

∠ABC=64°

Therefore, the measure of angle ABC is 64°.

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Answer:

Can you ask again with a picture? it's not clear with only text

The fraction of the fruit that Kri that is   \(\frac{3}{32}\). To find the fraction, you have to determine the value of the total data.

As per data given are banana = 10 and apple = 22. We will determine the fraction that Kri take by sum up the fruit and then determine the fraction where the maths as follow:

Total fruit = banana + apple

Total fruit = 10 + 22

Total fruit = 32

Then find Kri fraction as follow

Kri fraction = Kri fruit : total fruit

Kri fraction = 3 : 32 = \(\frac{3}{32}\)

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Answer:

I believe using the formula is the best method.

Step-by-step explanation:

If I am able to remember the formula this becomes the easiest method in my opinion. It is very simple and anyone can do it if the know basic algebrA.

Answer: C = 12

Step-by-step explanation:

A = x

B = x\(\sqrt{3}\)

C = 2x

So then to find A we divide B by \(\sqrt{3}\), which makes A =6. But C = 2x, so then C = 2(6), which equals 12. Hope that helps :)

The formula used to estimate the sample size for a simple random sample when estimating a population mean is:
n = (Z * σ / E) ^ 2.

1. Determine the desired confidence level for your estimation.
2. Find the corresponding Z-score for the desired confidence level. Common Z-scores for confidence levels include 1.96 for 95% confidence and 2.58 for 99% confidence.
3. Estimate the population standard deviation (σ) using previous data or assumptions.
4. Decide on the desired margin of error (E), which represents the maximum acceptable difference between the sample mean and the population mean.
5. Plug these values into the formula: n = (Z * σ / E) ^ 2.
6. Calculate the sample size (n) using the formula.
Therefore, the formula used to estimate the sample size for a simple random sample when estimating a population mean is n = (Z * σ / E) ^ 2.

where:
n is the sample size,
Z is the Z-score corresponding to the desired confidence level,
σ is the population standard deviation, and
E is the desired margin of error.

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Answer:

4x^2

Step-by-step explanation:

Call the unknown side y

The area of the figure is

8x^3 *y = 32 x^5

Divide each side by 8 x^3

8x^3 *y / 8x^3 = 32 x^5 / 8x^3

y = 4 x^2

The unknown side is 4 x^2

Answer:

4x^2

Step-by-step explanation:

32x^5 / 8x^3 = 4x^2

or 4x^2 * 8x^3 = 32x^5

so 4x^2

Answer:

Step-by-step explanation:

3n3

we have to combine like terms

n5-n2 is n3 (dividing exponents means subtracting)

this could be 1/3 n3 or 3 n3

Answer:

The slope is 1

Step-by-step explanation:

Slope can be found using the expression \(\frac{y2-y1}{x2-x1}\)

In this case,

y2 = 3

y1 = 1

x2 = 6

x1 = 4

\(\frac{3-1}{6-4}\)  =  2/2 = 1

Answer:1600

Step-by-step explanation:To solve this problem, we’ll have 3 variables

T for weight of tail

H for weight of head

B for weight of body

We know that T = 200 pounds

The head of the shark is the weight of the tail + half the body. Therefore, we can use the formula:

H = T + 0.5B

The body weighs as much as the head and tail. That will be

B = H + T

We can substitute H + T in the place of B in the H equation, so we get

H = T + 0.5H + 0.5T

Combining like terms, we get: 0.5H = 1.5T

Because T = 200 pounds, we can say 0.5H = 1.5 * 200, which simplifies to 0.5H = 300

Divide both sides by 0.5 and get H = 600 pounds

We can then find the weight of the body to be H + T, which is 200 + 600, and that adds up to 800 pounds

The total weight of the body is B + H + T, which equals 200 + 600 + 800, which is 1600 pounds.

Answer: Lets denote:

Tail by T

Head by H

and Body by B

Given info:

Statement 1: Head weighs as much as the tail plus half of it’s body

H =T + 1/2B

Thus,

H = 200 + 1/2 B …. Equation 1

Statement 2: Body weighs as much as head and tail.

B = H + T

B = H + 200 …. Equation 2

substituting value of B from equation 2 into 1.

H = 200 + 1/2H + 100

1/2H = 300

H = 600

B = 800

Shark’s weight = (H+T+ B) = 1600 pounds

The system of equations that represents the situation is given by:

C. x² – 2y ≥ 5000, 2x + 5y < 1000

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In tis problem, the company's stock is represented by the expression x² - 2y, and the goal is a stock value of at least $5,000, hence the first equation is given by:

x² – 2y ≥ 5000

The purchases are represented by 2x + 5y, and the goal is to keep it below $1,000, hence the second equation is given by:

2x + 5y < 1000

This means that option C is correct.

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Answer:

x2 – 2y ≥ 5000

2x + 5y < 1000

Step-by-step explanation:

I got it right on the test.

Answer:

0.0625x

Step-by-step explanation:

The data in the table of values can be used to find the line of best fit after plotting the graph

a. Please find attached the graph of the data showing the next two points on the table, which are (9, 9.8), (7, 11)

b. Linear correlation

c. Please find attached the graph of the data showing the line of best fit created with MS Excel

A line of best fit is a line that passes through a set of scatter plot, which most precisely reflects the relationship between the points.

a. Please find attached the graph of the data in the table, including the plot of the next two points (9, 9.8), and (7, 11), created with MS Excel

b. The type of correlation on the graph which consists of a straight line that is drawn across the points such that the distance between the line and the points on the graph is minimized, is a linear correlation.

c) The line of best fit, can be obtained adding the Trendline chart element on MS Excel, which can be obtained as follows;

Please find attached the graph of the Number of hours sleep to the Age of the children, showing the line of best fit, created with MS Excel

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Thus, the obtained area of sector for the given circle is found as 43.96 in².

Two radii that meet at the centre to form a sector define a circle. The sector is the portion of the circle created by these two radii. Knowing a circle's central angle assessment and radius measurement are both crucial for solving circle-related difficulties.

The curved portion that runs along the circle's perimeter and joins the ends of a two radii that make up a sector is known as the sector arc.

given data:

Formula for the area of sector:

area of sector = Ф /360 * (πr²)

area of sector = 140/360 * (3.14 *6²)

area of sector = 7/18 * 3.14 *36

area of sector = 43.96 in²

Thus, the obtained area of sector for the given circle is found as 43.96 in².

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