If you flip a coin 12 times, what is the best prediction possible for the number of times it will land on heads?

i don’t know what the answer is

Answer:

D= 68.3 meters

Step-by-step explanation:

The drawing makes a right angle triangle.

D is the distance from the boat to the bottom of the cliff

94 is the opposite and D is the adjacent.

54o is near the top.

tan(54)=94/D

1.37638192 = 94/D

We switch the denominator with the degree

D=94/1.37638192

We then divide.

D=68.29

Finally we round off

D= 68.3m

Two teams can be selected out of 10 teams in C(10,2) = 10!/8! 2! = 45 ways

=> If each team plays exactly 3 matches with each other team, number of matches will be 45 x 3 = 135.

:-)

Answer:

Step-by-step explanation:

Number of teams = 10

Each team play each of the other 9 teams once.

Correct choice is B

Answer:

(-3, 0) and (-1, 0)

Step-by-step explanation:

roots of the eqn = the x-intercepts (if any)

Topic: Quadratic Graphs.

If you would like to venture further, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

Answer  -1/12

Step-by-step explanation:

-7/12 + 1/2 cannot be added until you change 1/2 into 6/12.

To change 1/2 to 6/12, you have to multiply 1/2 by 6 because you want the same denominator. Since you can't just make a whole new fraction by changing the denominator, you have to multiply the numerator by 6 as well.

After changing the fraction, you should get -7/12 + 6/12.

now you can just add the numerators and denominators together and get -1/12!

Answer:

B

Step-by-step explanation:

-6 -------------------->

---------------> = x

x ------>

-6 NOT 6

Therefore is B

The charge per cubic foot is $0.05. The equation for the total cost of a resident's water is C(x) = 0.05x + 40. The number of cubic feet of water used that would lead to a bill of $130 is 2200.

We will use the given data to calculate the charge per cubic foot:Let x be the number of cubic feet of water used by a household and let y be the corresponding bill amount.

Case 1: When a household using 1000 cubic feet was billed $90.

Case 2: When one using 1600 cubic feet was billed $105.Subtracting case 1 from case 2, we get:$$105 - 90 = 15$$$$1600 - 1000 = 600$$So, the charge per cubic foot is:$$\frac{15}{600} = 0.025$$$$\implies 0.05 \text{ (for two decimal place)}$$ Hence, the charge per cubic foot is $0.05.

To write an equation for the total cost of a resident's water as a function of cubic feet of water used, we will use the given data:

$$\text{Fixed amount = } $40$$\text{Charge per cubic foot of water used = } $0.05$$\text{Number of cubic feet used = } x$$

Therefore, the equation for the total cost of a resident's water as a function of cubic feet of water used is:

$$C(x) = \text{(Charge per cubic foot of water used)}\times\text{(Number of cubic feet used)}+\text{(Fixed amount)}$$$$C(x) = 0.05x + 40$$

To find out how many cubic feet of water used would lead to a bill of $130, we will use the equation obtained above:

$$C(x) = 0.05x + 40

= $130$$$$\implies 0.05x

= $90$$$$\implies x

= \frac{90}{0.05}

= 1800$$

Therefore, the number of cubic feet of water used that would lead to a bill of $130 is 1800.

To know more about resident's water, visit

https://brainly.com/question/30332520

#SPJ11

Answer:

The cost of each ticket was $28.80

Step-by-step explanation:

20% of $180 is $36. 180-36=144. Since there were 5 tickets, the total would be $28.80 for each ticket, which was $144 in all.

Answer:6.28

Step-by-step explanation:

you multaply 2 feet by 3.14 because diameter is cercumfrence times pie

Answer: 320x + 256

Step-by-step explanation:

Answer:

True

Step-by-step explanation:

Statistics can add credibility to speech clims when used sparingly.

name me brainiest please.

True, statistics can add credibility to speech claims when used sparingly. By incorporating accurate and relevant statistics in a speech, you can support your arguments and demonstrate your knowledge on the subject. However, it is essential to use them sparingly to avoid overwhelming the audience and maintain their interest in your message.

Statistics, when used appropriately and sparingly, can add credibility to speech claims. By incorporating relevant and reliable statistical data, speakers can support their claims with objective evidence. Statistics have the potential to provide context, demonstrate trends, or highlight the magnitude of a particular issue, thereby strengthening the credibility and persuasiveness of the speaker's arguments.

However, it is important to use statistics accurately, ensuring they are from reliable sources, properly interpreted, and presented in a clear and understandable manner. Overusing statistics or relying solely on statistical evidence without considering other forms of supporting evidence may weaken the overall impact of the speech.

To learn more about statistics

https://brainly.com/question/12805356

#SPJ11

Answer:

what graph

Step-by-step explanation:

Answer:

17

Step-by-step explanation:

If Rin pulls out 1 blue marble from the bag then total marbles left in the bag now= 18 − 1 = 17

Now Misaki pulls out a marble: Probability of red marble= 3/17

probability of blue marble= 4/17

Answer:17

Step-by-step explanation:

The probability that a standard normal random variable z is between -2.4 and 0.4 is approximately 0.6472.

To find the probability that a standard normal random variable z is between -2.4 and 0.4, we can follow these steps:

Step 1: Look up the cumulative probability corresponding to -2.4 in the standard normal distribution table. The cumulative probability at -2.4 is approximately 0.0082.

Step 2: Look up the cumulative probability corresponding to 0.4 in the standard normal distribution table. The cumulative probability at 0.4 is approximately 0.6554.

Step 3: Subtract the cumulative probability at -2.4 from the cumulative probability at 0.4 to find the probability between the two values:

P(-2.4 < z < 0.4) = 0.6554 - 0.0082

= 0.6472.

Therefore, The probability that z is between -2.4 and 0.4, when z is a standard normal random variable, is approximately 0.6472. This means that there is a 64.72% chance that a randomly selected value from a standard normal distribution falls within the range of -2.4 to 0.4.

To know more about probability, visit:

https://brainly.com/question/32782543

#SPJ11

the solution for the initial value problem is: u(x, t) = sin(sqrt(-λ² * (a / 4)) * x) * exp(-λ² * t) where λ = ± sqrt(-4n² / a), and n is a non-zero integer.

The given partial differential equation is:

au(x, t) = 4 * (d²u(x, t) / dt²) / (dx²)

a) BCs (Boundary Conditions):

We have u(0, t) = 0 and u(π, t) = 0.

IC (Initial Condition):

We have u(x, 0) = x.

To solve this initial value problem, we need to find a function f(x) that satisfies the given boundary conditions and initial condition.

The solution for f(x) can be found using the method of separation of variables. Assuming u(x, t) = X(x) * T(t), we can rewrite the equation as:

X(x) * T'(t) = 4 * X''(x) * T(t) / a

Dividing both sides by X(x) * T(t) gives:

T'(t) / T(t) = 4 * X''(x) / (a * X(x))

Since the left side only depends on t and the right side only depends on x, both sides must be equal to a constant value, which we'll call -λ².

T'(t) / T(t) = -λ²

X''(x) / X(x) = -λ² * (a / 4)

Solving the first equation gives T(t) = C1 * exp(-λ² * t), where C1 is a constant.

Solving the second equation gives X(x) = C2 * sin(sqrt(-λ² * (a / 4)) * x) + C3 * cos(sqrt(-λ² * (a / 4)) * x), where C2 and C3 are constants.

Now, applying the boundary conditions:

1) u(0, t) = 0:

Plugging in x = 0 into the solution X(x) gives C3 * cos(0) = 0, which implies C3 = 0.

2) u(π, t) = 0:

Plugging in x = π into the solution X(x) gives C2 * sin(sqrt(-λ² * (a / 4)) * π) = 0. To satisfy this condition, we need the sine term to be zero, which means sqrt(-λ² * (a / 4)) * π = n * π, where n is an integer. Solving for λ, we get λ = ± sqrt(-4n² / a), where n is a non-zero integer.

Now, let's find the expression for u(x, t) using the initial condition:

u(x, 0) = X(x) * T(0) = x

Plugging in t = 0 and X(x) = C2 * sin(sqrt(-λ² * (a / 4)) * x) into the equation above, we get:

C2 * sin(sqrt(-λ² * (a / 4)) * x) * C1 = x

This implies C2 * C1 = 1, so we can choose C1 = 1 and C2 = 1.

Therefore, the solution for the initial value problem is:

u(x, t) = sin(sqrt(-λ² * (a / 4)) * x) * exp(-λ² * t)

where λ = ± sqrt(-4n² / a), and n is a non-zero integer.

Note: Please double-check the provided equation and ensure the values of a and the given boundary conditions are correctly represented in the equation.

To know more about Equation related question visit:

https://brainly.com/question/29657983

#SPJ11

The length of the smallest part of the line segment is 12 cm.

The line segment of length 96 cm is divided into 3 parts with the ratio of 2:9:5. The given ratio is a part-to-whole ratio. We can find the lengths of the parts by applying the formula:

Part = Whole × Ratio

Part 1 = 96 cm × (2/16)

= 12 cm

Part 2 = 96 cm × (9/16)

= 54 cm

Part 3 = 96 cm × (5/16)

= 30 cm

Therefore, the length of the smallest part of the line segment is 12 cm.

Learn more about line segment here:

https://brainly.com/question/30072605

#SPJ4

The length x of JK is 3.6 units

Here, quadrilaterals ABCD and JKLM are similar.

We know that the corresponding sides of similar triangles are in proportion.

So, by definition of similar triangles,

AB/JK = BC/KL = CD/LM = AD/JM

To find:  the length x of JK

So, consider an equation

AB/JK = AD/JM

Substitute the length of each side in above equation.

4/x = 2/1.8

(4 × 1.8)/x = 2

(4 × 1.8)/2 = x

x = 2 × 1.8

x = 3.6

Therefore, the length of JK = 3.6 units

Learn more about an equation here:

https://brainly.com/question/649785

#SPJ4

The angle bisector of ∠PQR is Ray QE. If m∠PQE = 2n°,   m∠PQR= 4n°

Given :

The angle bisector of ∠PQR is Ray QE

\(m<PQE = 2n\)

QE bisects angle PQR. When any ray bisects an angle then it divides the angle equally.

so , m∠PQE= m∠EQR

m<EQR=2n

\(m<PQR= m<PQE+ m<EQR\\m<PQR= 2n+2n \\m<PQR= 4n\)

The measure of angle   m∠PQR= 4n°

Option C is  correct.

LEarn more :  brainly.com/question/16112950

The partial derivative diffusivity equation for spherical flow is ∂²p/∂r² + (1/r) ∂p/∂r = ϕμC/k ∂p/∂t, and for hemispherical flow, it is the same equation.

1. The partial derivative diffusivity equation for spherical flow is derived from the spherical coordinate system and applies to radial flow in a spherical geometry. It can be expressed as ∂²p/∂r² + (1/r) ∂p/∂r = ϕμC/k ∂p/∂t.

2. The partial derivative diffusivity equation for hemispherical flow is derived from the hemispherical coordinate system and applies to radial flow in a hemispherical geometry. It can be expressed as ∂²p/∂r² + (1/r) ∂p/∂r = ϕμC/k ∂p/∂t.

1. For the derivation of the partial derivative diffusivity equation for spherical flow, we consider a spherical coordinate system with the radial direction (r), the azimuthal angle (θ), and the polar angle (φ). By assuming steady-state flow and neglecting the other coordinate directions, we focus on radial flow. Applying the Laplace operator (∇²) in spherical coordinates, we obtain ∇²p = (1/r²) (∂/∂r) (r² ∂p/∂r). Simplifying this expression, we arrive at ∂²p/∂r² + (1/r) ∂p/∂r.

2. Similarly, for the derivation of the partial derivative diffusivity equation for hemispherical flow, we consider a hemispherical coordinate system with the radial direction (r), the azimuthal angle (θ), and the elevation angle (ε). Again, assuming steady-state flow and neglecting the other coordinate directions, we focus on radial flow. Applying the Laplace operator (∇²) in hemispherical coordinates, we obtain ∇²p = (1/r²) (∂/∂r) (r² ∂p/∂r). Simplifying this expression, we arrive at ∂²p/∂r² + (1/r) ∂p/∂r.

In both cases, the term ϕμC/k ∂p/∂t represents the source or sink term, where ϕ is the porosity, μ is the fluid viscosity, C is the compressibility, k is the permeability, and ∂p/∂t is the change in pressure over time.

These equations are commonly used in fluid mechanics and petroleum engineering to describe radial flow behavior in spherical and hemispherical geometries, respectively.

To learn more about partial derivative, click here: brainly.com/question/2293382

#SPJ11

Answer:

103%

Step-by-step explanation:

each little box is 1%

Answer:

x=50

Step-by-step explanation:

2x+20=3x-30

2x-3x=-x

20+30=50

-x+50=0

-x=-50

x=50

Answer:

24 ft

Step-by-step explanation:

16 cm to 32 ft

multiply by two , and change units to ft

12 cm to ft scale

multiply by 2 and change units to ft

You get

24 ft

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Here's the solution,

the ratio of length and breadth of the house is :

=》16 : 12

=》4 : 3

so, let's take the actual breadth be ' x '

we know,

=》32 : x = 4 : 3

because it's the ratio of length and breadth of the house

so,

\( \dfrac{32}{x} = \dfrac{4}{3} \)

=》

\(x = 32 \times \dfrac{3}{4} \)

=》

\(x = 24\)

hence, the actual breadth of the house is 24 feet

Answer:

z>-4

Step-by-step explanation:

Answer:

z>4

Step-by-step explanation:

-2z-3<5

add 3 to 5: -2z < 8

divide by -2: z < -4

but since you divided by a negative number, you have to change the way the inequality is facing so the answer is z>-4

The correct equation is 5x = 8.5, and the value of x, representing the total amount of salsa in the original container, is 1.7 ounces.

The correct equation and value of x to represent the total amount of salsa in the original container are:

5x = 8.5; x = 1.7 ounces

In this equation, x represents the amount of salsa in each bowl, and the total amount of salsa in the original container is represented by 5x since there are 5 bowls.

Since each bowl contained 8.5 ounces of salsa, we can substitute this value into the equation:

5x = 8.5

To find the value of x, we divide both sides of the equation by 5:

x = 8.5 / 5

x = 1.7 ounces

Therefore, the correct equation is 5x = 8.5, and the value of x, representing the total amount of salsa in the original container, is 1.7 ounces.

Learn more about container here

https://brainly.com/question/31404735

#SPJ11

(a) Country X's economy can be illustrated on a production possibilities curve (PPC) with increasing opportunity cost. The current operating point is labeled as point X.

(b) If the government of Country X reduces tax rates on interest earned from household savings, the national savings would increase. This is because lower tax rates provide an incentive for individuals to save more of their income.

(c) On a loanable funds market graph, the policy change mentioned in part (b) would shift the demand curve for funds to the right, leading to an increase in the equilibrium real interest rate and equilibrium quantity of funds.

(d) Assuming Country X is still maximizing resource use, the change in real interest rates would affect the PPC graph from part (a). A higher real interest rate would lead to a decrease in investment, shifting the PPC inward, resulting in a new production point labeled as point R.

(e) In the long run, the long-run aggregate supply of Country X would stay the same. Changes in real interest rates in the short run do not impact the potential output of an economy.

(a) Country X's economy is represented on a production possibilities curve (PPC), which shows the maximum combinations of consumer goods and capital goods that can be produced with the given resources and technology. Assuming increasing opportunity cost, the PPC would be concave, reflecting the trade-off between producing different types of goods. Point X on the curve represents the current operating point of the economy, where resources and employment are maximized.

(b) Reducing tax rates on interest earned from household savings would incentivize individuals to save more. This increase in savings would contribute to national savings. When individuals save more, it means they are consuming less of their income, allowing resources to be allocated towards investment. As a result, the national savings would increase.

(c) The policy change mentioned in part (b) would impact the loanable funds market. Lower tax rates on interest earned would increase the supply of loanable funds. This would shift the supply curve to the right, leading to a decrease in the equilibrium real interest rate and an increase in the equilibrium quantity of funds. The lower real interest rate would incentivize borrowing and investment, stimulating economic growth.

(d) Assuming Country X is still maximizing resource use, a change in real interest rates would impact the PPC graph from part (a). An increase in real interest rates would raise the cost of borrowing for firms, reducing their investment. This decrease in investment would result in a decrease in the production capacity of the economy, shifting the PPC inward. The new production point, labeled as point R, would reflect the short-run impact of the change in real interest rates.

(e) In the long run, changes in real interest rates do not affect the potential output or long-run aggregate supply of an economy. The long-run aggregate supply is determined by the economy's available resources, technology, and efficiency. While changes in real interest rates may impact investment and production in the short run, they do not alter the economy's productive capacity in the long run. Therefore, the long-run aggregate supply of Country X would stay the same.

Learn more about decrease here: https://brainly.com/question/199119

#SPJ11

Answer:

wjwjwjwjuwuwuwuueuejsnsjjdjejejenekjekekeikw

Answer:

do it yourself

Step-by-step explanation:

Stop cheating

Lines have a larger m value, that is, m > 1 have steeper slope and lines having an m value between 0 and 1, usually in the form of a fraction have a flatter slope .

Slope is the rate of change in the dependent variable with respect to the independent variable.

For an equation of line of the type - y= mx +c , the slope is given by the m value.

Now, if the value of m > 1 like m=1,2,3, ... , the lines have a steeper slope and have a steep nature.

Similarly, if the value of m < 1 i.e. 0 < m < 1 like m=1/2,2/3, ... fractional values,  the lines have a flatter slope and do not have a steep nature.

To learn more about slope of a line , visit link - brainly.com/question/16180119

#SPJ4

Answer:

angle 4 is a full angle because it is represented full 110

Answer:

1 - 110

2 - 110

3 - 70

4 - 70

Dear [Friend's Name],

I hope this letter finds you in good health and high spirits. I wanted to share with you some exciting developments in the field of education that have been made possible by computers. Here are three ways in which computers have made learning easier for students:

1. Access to Information: The internet, powered by computers, provides a wealth of information at our fingertips. Students can quickly search for information on any topic and have access to numerous articles, videos, and resources. This instant access to information makes researching and learning about new subjects much more convenient.

2. Online Collaboration: Computers enable students to collaborate with their peers, teachers, and experts from around the world through video conferencing, online forums, and group projects. This fosters teamwork and helps students gain diverse perspectives, making the learning process more engaging and enriching.

3. Personalized Learning: Educational software and applications on computers allow students to learn at their own pace, adapting to their strengths and weaknesses. This personalized approach to learning ensures that each student receives the support they need, ultimately leading to better learning outcomes.

These are just a few examples of how computers have revolutionized education and made learning easier for students. I hope you find these developments as fascinating as I do. Let's continue to share our knowledge and experiences in the ever-evolving world of education.

Wishing you all the best,

[Your Name]

To know more about letter visit:

https://brainly.com/question/13943501

#SPJ11

The minimum dimensions to minimize the amount of material is 15.87 x 15.87 x 15.87 inch.

We need to know about the minimum function to solve this problem. The minimum function can be defined as the minimum value of the variable. It can be calculated by the derivative of the function. The minimum function can be written as

f'(s) = 0

where f'(s) is the derivative function

From the question above, the given parameter is

V = 4000 inch³

The cubic volume can be written as

s² x h = 4000

where s is the length of the base area and h is the height of the box.

the minimum value of the  box refer to its surface area, hence

f(s) = 4sh + 2s²

f'(s) = 4h + 4s

4h + 4s = 0

h = s

It means that the length of the base area and the height must have the same dimension. The minimum volume should have a cube shape

V = s³

s³ = 4000

s = 15.87 inch

Find more on minimum function at: https://brainly.com/question/82347

#SPJ4

Given:

If AB = 0,

Then it is not necessary that A=0 or B=0

To prove this, we consider an example:

Let n=m = p =2

Then AB is given as:

Clearly AB= 0 but A,B not equals to zero.

Hence, the given statement is not true.

Hence, the answer is false.