please help i suck at math

The area of a circle is given by the formula:

A = πr^2

where r is the radius of the circle.

Substituting the value of the radius as r = 10 cm, we get:

A = π(10)^2

A = 100π

Therefore, the area of the circle with radius 10 cm is 100π square centimeters.

~~~Harsha~~~

Answer:

Food Saver

Step-by-step explanation:

6.45 ÷ 5 = 1.29

2.50 ÷ 2 = 1.25

9.45 ÷ 7 = 1.35

12.89 ÷ 10 = 1.289

Food Saver sells for $1.25 per pound, which is the lowest.

Answer:

Food Saver

Step-by-step explanation:

Bargain Mart:   6.45/5 = $1.29/lb

Food Saver:   2.50/2 = $1.25/lb

Grocery Surplus:  9.45/7 = $1.35/lb

Economart:   12.89/10 = $1.29/lb

A statistic can never be larger than a parameter is not a correct statement. The correct statement among the following is as follows: IV Only. The statement "A statistic can be calculated whereas a parameter can never be established" is the correct statement.

Statistics and parameters are two fundamental concepts in statistical analysis. Both of these concepts are widely used in various researches and surveys.

A statistic is a numerical value that represents a particular characteristic of the sample and is used to estimate an unknown parameter. A parameter is a numerical value that represents a particular characteristic of a population.Statistics can be larger, smaller, or equal to parameters. A statistic is a value that is calculated from a sample, whereas a parameter is a value that represents a population characteristic and is estimated from the sample.A parameter can be established, but it is only possible if the entire population is considered for analysis. In contrast, a statistic is calculated from a sample of the population and represents only the characteristics of the sample.

:A statistic can never be larger than a parameter is not a correct statement. The correct statement is IV Only. The statement "A statistic can be calculated whereas a parameter can never be established" is the correct statement.

To know more about statistic visit:

brainly.com/question/31538429

#SPJ11

The angle of the sector is found to be 60 degrees.Given that the sector of a circle has a radius of 8 cm and its perimeter is (16 + 14π) cm. Let the angle of the sector be x°.

The perimeter of the sector can be expressed as the sum of the arc length and the lengths of the two radii. Therefore,

Perimeter of the sector = arc length + 2(radius)

(16 + 14π) = (x/360) * 2π * 8 + 2(8)

Simplifying the above equation, we get

16 + 14π = (4x/45)π + 16

14π = (4x/45)π

Dividing both sides by π, we get

14 = 4x/45

Multiplying both sides by 45, we get

630 = 4x

Therefore, x = 630/4 = 157.5 degrees.

However, we need to find the acute angle between the radii, which is half of the angle of the sector. Therefore, the angle of the sector is 2(157.5/2) = 157.5 degrees.

Hence, the angle of the sector is 60 degrees.

Learn more about perimeter here: brainly.com/question/30252651.

#SPJ11

The area to the left of z=1.07 is approximately 0.8577 (rounded to four decimal place. To find the area under the standard normal curve to the left of z = 1.07 using a TI-84 calculator.

Follow these steps:

1. Press the "2nd" button, then press "Vars" to access the "DISTR" menu.
2. Scroll down to "normalcdf(" and press "Enter".
3. Enter -99999 (or -E99) as the lower limit, since we want to find the area to the left of z = 1.07, which is very close to negative infinity.
4. Enter 1.07 as the upper limit, since we want to find the area to the left of this value.
5. Enter 0 as the mean, since we're working with the standard normal distribution.
6. Enter 1 as the standard deviation, since we're working with the standard normal distribution.
7. Press "Enter" to calculate the area.

The answer should be approximately 0.8577 when rounded to four decimal places.

Learn more about area  here:

https://brainly.com/question/27683633

#SPJ11

Answer:

2(6e-3f+10g)

Answer (I think): 12e-6f+20g

Step-by-step explanation:

Answer:

12e - 6f + 20g

Step-by-step explanation:

2(6e - 3f + 10g) is the given equation. Because of the grouping, we know  that the entire part in parentheses is multiplied by two. Now the distributive property helps us by letting us multiply each individual part of the parentheses by two.

6e becomes 12e

-3f becomes -6f

and 10g becomes 20g

Now when we put those together, it becomes 12e - 6f + 20g

Hope this helped!

Answer:

child byeee kid jdhuwkjikw

Step-by-step explanation:

It is not possible to find the triangular formula of a pentagon because a pentagon is a polygon with five sides and does not have a triangular formula.

We have,

A triangular formula is used to calculate the area of a triangle, which is a polygon with three sides.

The formula for the area of a triangle is given by:

Area = 1/2 x base x height

where the base and height are two of the sides of the triangle.

If you want to calculate the area of a pentagon, you can use the formula for the area of a regular pentagon, which is given by:

Area = (5/4) x s² x tan(π/5)

where s is the length of one of the sides of the Pentagon.

Thus,

It is not possible to find the triangular formula of a pentagon because a pentagon is a polygon with five sides and does not have a triangular formula.

Learn more about the Pentagon here:

https://brainly.com/question/30182047

#SPJ1

Answer:

75

Step-by-step explanation:

(0.45)(30) = (0.18)x

x = (0.45)(30) / (0.18)

x = 13.5 / 0.18 = 75

Check the answer:

(0.45)(30) = (0.18)(75)

13.5 = 13.5   answer is correct!

Answer:

Step-by-step explanation:

45% of 30 = 18% of some number

In this kind of questions, we usually assume the missing number as as something

Let the number be x

So assuming the number is x, the equation will be as follows:

45% of 30 is equal to 18% of x

45/ 100 * 30 = 18/100 * x

This means that 0.45 *30= 0.18 * x

Therefore, 13.5 = 0.18 x

Thus X = 13.5 / 0.18

Which is equal to 75

Thus 45% of 30 is equal to 18% of 75

Proving the above situation as follows:

45% OF 30 = 13.5

And 18% of 75 = 13.5

Thus both equations are equal.

Solution =75

Answer:

x= 2 and y= 2

Step-by-step explanation:

y=3/2x -1 and y=x

Change x to y = 3 / 2x -1

x = 3/2x -1 and y=x

-1/2x = -1 and y=x

x= 2 and y= 2

a. To find the probability that there are no cars in the system, we need to use the formula for the steady-state probability distribution of the M/M/1 queue:
P(0) = (1 - λ/μ)
where λ is the arrival rate (2 per hour) and μ is the service rate (3 per hour).
P(0) = (1 - 2/3) = 1/3 or 0.3333
Therefore, the probability that there are no cars in the system is 0.3333.

b. To find the average number of cars in the system, we can use Little's Law:
L = λW
where L is the average number of cars in the system, λ is the arrival rate (2 per hour), and W is the average time spent in the system.
We can solve for W by using the formula:
W = 1/(μ - λ)
W = 1/(3 - 2) = 1 hour
Therefore, the average number of cars in the system is:
L = λW = 2 x 1 = 2 cars

c. To find the average time spent in the system, we already calculated W in part b:
W = 1 hour

d. To find the probability that there are exactly two cars in the system, we need to use the formula for the steady-state probability distribution:
P(n) = P(0) * (λ/μ)^n / n!
where n is the number of cars in the system.
P(2) = P(0) * (λ/μ)^2 / 2!
P(2) = 0.3333 * (2/3)^2 / 2
P(2) = 0.1111 or 11.11%
Therefore, the probability that there are exactly two cars in the system is 11.11%.

To know more about Poisson's Distribution:

https://brainly.com/question/9123296

#SPJ11

The specified circle's center is at (-7, 4). The revised center will therefore be (-7 - 3, 4 - 4) = (-10, 0).

We must deduct 3 from x and 4 from y in order to move the circle 3 units to the right and 4 units below. The revised center will therefore be (-7 - 3, 4 - 4) = (-10, 0).

By inserting the new center and simplifying, it is possible to find the equation for the resulting circle. The equation for a circle has the conventional form\((x - h)^2 + (y - k)^2 = r^2\), where (h, k) is the circle's center and r is its radius. Since the original equation is\((x+7)^2+(y-4)^2=36\), we may substitute the new center (-10, 0) and the radius 6 to obtain \((x + 10)^2 + y^2 = 36\)as the equation of the translated circle.

Learn more about quadratic equation here:

brainly.com/question/30098550

#SPJ1

Answer:

3 °F/h

Step-by-step explanation:

The rate per hour of temperature change = change in temperature per measurement/change in time per measurement.

Now, the change in temperature per measurement is constant = 3/4 °F and the change in time per measurement is constant = 15 minutes = 15/60 h = 1/4 h.

So, rate per hour of temperature change = change in temperature per measurement/change in time per measurement

= 3/4 °F ÷ 1/4 h

= 3/4 °F × 4/h

= 3 °F/h

So, the rate per hour of temperature change is 3 °F/h

The missing value of b is -1 and the missing value of m is -2.To determine the missing values of b and m in the system of equations,

we can substitute the given point (2,5) into each equation and solve for the variables.

First, substitute the point (2,5) into the equation y = 3x + b:

5 = 3(2) + b

Simplify the equation:

5 = 6 + b

Subtract 6 from both sides:

5 - 6 = b

-1 = b

Therefore, the missing value of b is -1.

Next, substitute the point (2,5) into the equation y = mx + 9:

5 = 2m + 9

Simplify the equation:

5 - 9 = 2m

-4 = 2m

Divide both sides by 2:

-4/2 = m

-2 = m

Therefore, the missing value of m is -2.

To summarize:

b = -1

m = -2

By substituting the point (2,5) into each equation, we determined that the missing value of b is -1 and the missing value of m is -2.

learn more about equation here: brainly.com/question/29657983

#SPJ11

The solution to the initial value problem is y = -(4/3)x3 + (4/2)x2 + c

To solve this initial value problem, use the following steps:

Separate the variables:
y' = (x y - 4)2

Integrate with respect to x:
y' dx = (x y - 4)2 dx

Solve the integral:
y' dx =  (x3 y/3 - 4x2/2) + C

Substitute the initial value y(0) = 0 and solve for C:
0 =  (x3 y/3 - 4x2/2) + C
C = -4/2

Putting the constant back into the equation and solve for y:
=>y' dx =  (x3 y/3 - 4x2/2 - 4/2 )
=>y = -(4/3)x3 + (4/2)x2 + c Where c is an arbitrary constant.

To know more initial value problem, refer here:

https://brainly.com/question/30547172#

#SPJ11

Answer:

waa ;-;

Step-by-step explanation:

sorry ill put it here monday

Answer:

;0

Step-by-step explanation:

hi

Answer:

\(5(x - 2) = x + 1 \\ 5x - 10 = x + 1 \\ 5x - x = 1 0+ 1 \\ 4x = 11 \\ x = \frac{11}{4} \)

The speed of download of the first movie is 0.0621621621621622 GB/min and the speed of download of the second movie is 0.0527027027027027 GB/min. The second movie downloaded faster.

What is speed?

The speed of an object, which is a scalar quantity in everyday usage and kinematics, is the size of the change in that object's position over time or the size of the change in that object's position per unit of time.

It took time to download 2.3 GB's of the first movie is 37 minutes.

It took time to download 3.9 GB's of the first movie is 74 minutes.

Thus the speed of download of the first movie is

GB/ time

= 2.3/37

= 0.0621621621621622 GB/min

Thus the speed of download of the second movie is

GB/ time

= 3.9/74

= 0.0527027027027027 GB/min

The speed of download of the second movie is more than the speed of download of the first movie.

To learn more about download of movie, click on the below link:

https://brainly.com/question/25264064

#SPJ1

Answer:

the vertex represents a maximum

Vertex is (4,7)

f(x)=-(x-4)^2+7

Step-by-step explanation:

Given the function \(f(x)=-x^2+8x+9\)

Equation is in the form of y=ax^2+bx+c

\(a=-1\)

When 'a' is negative, then vertex is maximum

when 'a' is positive, then vertex is minimum

\(a=-1\) is negative, so the vertex represents a maximum

\(f(x)=-x^2+8x+9\), factor out negative

Take out negative sign in common

Answer:

<A obtuse

<B acute

<C obtuse

<D right

Step-by-step explanation:

When calculating a nation’s digital power, the term that is used to refer to the demonstrated capabilities of a nation-state in cyber offense or defense is Cyberwarfare.

Cyberwarfare  can be regarded as the use of cyber attacks against a nation-state so as to produce significant harm.

It should be noted that Cyber Warfare is set of actions  which is been carried out by  nation or organization so as to be able to launch an attack on institutions' computer network systems.

The interests or reasons for cyberwarfares based on the Cybersecurity as well as Infrastructure Security Agency are;

In order to achieve the goals behind the cyberwarfare programs, it is usually designed to focus on spectrum of objectives which will bring harm to national interests.

Learn more about Cyberwarfare at:

https://brainly.com/question/13109173

#SPJ1

`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.

\(\quad \qquad \huge \bf \dag \: Answer \: \dag\)

`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.

\( \underline{ \large \rm Solution} : \)

\(\rm Given : \)

Two equations are -

\( \rm Procedure : \)

Considering the equations as (i) and (ii) respectively

From equation (i) -

put this value of y in equation (ii) -

Next thing to do would be to put value of x we got in equation (i) to get y

Values asked are :

\( \rightarrow \rm y = - 4\)

\( \rightarrow \rm x= - 2\)

`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.

\( \large \bf hope \: \: it \: \: helps \: - dabI \)

`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.`●.

Answer:

\(a(n) = 1 \times {3}^{n - 1} \)

Step-by-step explanation:

\(a(n) = a(1) {r}^{n - 1} \\ a(n) = 1 \times {3}^{n - 1} \)

Answer:

D

Step-by-step explanation:

The calculated value of z-score for the mean 71 and standard deviation 4.2 with person score 73 is equal to 0.4762( upto to four decimal place)

Mean of the data 'μ' = 71

Standard deviation of the data 'σ ' = 4.2

Score obtained by a person 'X' = 73

Formula for the z-score is equal to :

Z-score  = ( X - μ ) / σ

Substitute the value of mean , standard deviation , and person score to get the value of z-score we have,

⇒ Z-score  = ( 73 - 71 ) / 4.2

⇒ Z-score  =  ( 2 ) / 4.2

⇒ Z-score  = 0.47619

⇒ Z-score  =  0.4762

Therefore, the value of z-score as per the given mean and standard deviation is equal to 0.4762.

Learn more about z-score here

brainly.com/question/15016913

#SPJ4

The data provide convincing statistical evidence that there is an association between age group and consumption of fruits and vegetables for adults in the United States.

To determine if the data provide convincing statistical evidence that there is an association between age group and consumption of fruits and vegetables, we can perform a chi-squared test of independence. This test assesses whether there is a statistically significant association between two categorical variables.

The null hypothesis for this test is that there is no association between age group and consumption of fruits and vegetables, and the alternative hypothesis is that there is an association between the two variables.

Using the given data, we can calculate the expected frequencies for each cell under the assumption that there is no association between age group and consumption of fruits and vegetables. We can then use these expected frequencies to calculate the chi-squared test statistic and determine the p-value.

Performing the chi-squared test of independence with the given data yields a test statistic of 300.96 and a p-value of less than 0.0001. This indicates that there is a statistically significant association between age group and consumption of fruits and vegetables.

Learn more about the chi-squared test;

https://brainly.com/question/4543358

#SPJ4

The image of the complete question is given in the attachment.

Answer:

y = 2x - 4

Step-by-step explanation:

To solve this problem, we must first calculate the slope of the line AB using the formula:

\(\boxed{m = \frac{y_2 - y_1}{x_2 - x_1}}\)

where:

m ⇒ slope of the line

(x₁, y₁), (x₂, y₂) ⇒ coordinates of two points on the line

Therefore, for line AB with points A = (2, 5) and B = (4, 4) :

\(m_{AB} = \frac{5 - 4}{2 - 4}\)

⇒ \(m_{AB} = \frac{1}{-2}\)

⇒ \(m_{AB} = -\frac{1}{2}\)

Next, we have to calculate the slope of the line BC.

We know that the product of the slopes of two perpendicular lines is -1.

Therefore:

\(m_{BC} \times m_{AB} = -1\)      [Since BC and AB are at right angles to each other]

⇒ \(m_{BC} \times -\frac{1}{2} = -1\)

⇒ \(m_{BC} = -1 \div -\frac{1}{2}\)      [Dividing both sides of the equation by -1/2]

⇒ \(m_{BC} = \bf 2\)

Next, we have to use the following formula to find the equation of line BC:

\(\boxed{y - y_1 = m(x - x_1)}\)

where (x₁, y₁) are the coordinates of a point on the line.

Point B = (4, 4) is on line BC, and its slope is 2. Therefore:

\(y - 4 =2 (x - 4)\)

⇒ \(y - 4 = 2x - 8\)         [Distributing 2 into the brackets]

⇒ \(y = 2x-4\)

Therefore, the equation of line BC is y = 2x - 4.

Check the picture below.

so if we pluck the cylinder from the inside, what's leftover is that cyan ring with a height of 10, well, let's get the area of the ring and simply multiply it by its height.

\(\textit{area of a circular ring}\\\\ A=\pi (R^2 - r^2) ~~ \begin{cases} R=\stackrel{outer}{radius}\\ r=\stackrel{inner}{radius}\\[-0.5em] \hrulefill\\ R=15\\ r=11 \end{cases}\implies A=\pi (15^2-11^2)\implies A=104\pi \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{volume of a hollow cylinder}}{104\pi }\cdot 10 ~~ \approx ~~ \text{\LARGE 3267.26}~in^3 ~~ \approx 3266~in^3\)

side length of square =4

side length of cube=3

hence the correct statement is,

the side length of the cube is less than the side length of the square

Answer:

I have know clue

Step-by-step explanation: