Help a chick out only if u know what u doing

The correct system of equations that represents the cost relationships for the two cell phone plans is option(a) Megacell: y = 0.1x + 14.8 and Fun Fone: y = 0.08x + 18.5.

Let's break down the given information for the two cell phone plans:

Megacell charges $14.80 per month plus 10 cents per minute for every minute over 200. This means that the cost (y) for using x minutes over 200 can be represented by the equation y = 0.1x + 14.8. The $14.80 represents the fixed monthly charge, and the 10 cents per minute over 200 is added to the total cost.

Fun Fone charges $18.50 per month plus 8 cents per minute for every minute over 200. This means that the cost (y) for using x minutes over 200 can be represented by the equation y = 0.08x + 18.5. The $18.50 represents the fixed monthly charge, and the 8 cents per minute over 200 is added to the total cost.

Therefore, the correct system of equations that represents these cost relationships is Megacell: y = 0.1x + 14.8 and Fun Fone: y = 0.08x + 18.5, which corresponds to option A.

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Answer:

4

Step-by-step explanation:

32 divided by 8

The critical region(s) on a normal curve distribution would be located in the tail(s) of the curve. In hypothesis testing, the critical region(s) refers to the area(s) of the distribution that corresponds to rejecting the null hypothesis. This region(s) is based on the significance level of the test, which is typically set at 0.05 or 0.01.

In this case, the null hypothesis would be that listening to Vance Joy does not have a significant effect on happiness levels. The alternative hypothesis, which is what the researcher is testing for, would be that there is a significant difference in happiness levels between those who listen to Vance Joy and those who do not.
Assuming a two-tailed test, where the researcher is interested in whether the effect could be positive or negative, the critical region(s) would be located in both tails of the normal curve distribution. The exact location of the critical region(s) would depend on the sample size and the significance level of the test.
If the sample size is large, the critical region(s) would be located farther from the mean, indicating a higher level of confidence in rejecting the null hypothesis. Conversely, if the sample size is small, the critical region(s) would be located closer to the mean, indicating a lower level of confidence in rejecting the null hypothesis.
Overall, the critical region(s) on a normal curve distribution represents the area(s) of the distribution that corresponds to rejecting the null hypothesis, and its location depends on the sample size and the significance level of the test.

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Answer:

Step-by-step explanation:

The two trains are moving apart from each other, so we can add their speeds to find their relative speed:

Relative speed = 75 + 95 = 170 miles per hour

We want to know how long it will take for the trains to be 204 miles apart. We can use the formula:

distance = rate × time

to solve for the time. Let t be the time in hours:

204 = 170t

Solving for t, we get:

t = 204/170

t ≈ 1.2 hours

Therefore, it will take approximately 1.2 hours for the two trains to be 204 miles apart.

Answer:

Sherly's Plumbing is : f(x) = 43x + 30 and Howard's Plumbing is f(x) = 28x + 24

sherly's f(7) = 331 and Howard's f(7) = 220

========================================================

Explanation:

In Rona's sample, she got 16 green out of 16+24 = 40 total.

So 16/40 = (8*2)/(8*5) = 2/5 of the results she got were green.

Assuming this ratio is kept the same, this would mean 2/5 of the 35 marbles in the box should be green. This is the value we expect though realistically it might be slightly off.

2/5 of 35 = (2/5)*35 = (2*35)/5 = 70/5 = 14

We should expect 14 of the marbles in the box to be green.

The solution to the system of equations (0.4, 1).

Given equations according to the question,

y = -5x+3

y = 1

Now we can use y = 1 and substitute the value of y in y = -5x+3

After substituting we get, the value of y we get,

= 1 = -5x+3

Now given points according to the questions are

(0.4, 1) , (0.8, 1), (1, 0.4), (1, 0.8).

We substitute these points in the equation to see which points satisfy the equation, the point satisfying the equation is our point.

First, we will use (0.4, 1)

= 1 = -5x+3

= 1 = -5×0.4 + 3

= 1 = -2+3

= 1 = 1

Hence (0.4, 1) is our first solution of the equation.

Then we will use (0.8 ,1)

= 1 = -5x+3

= 1 = -5×0.8 + 3

= 1 = -4+3

= 1 = -1

Hence (0.8, 1) is not out the solution to the equation.

Then we will use (1,0.4)

= 1 = -5x+3

= 1 = -5×1 + 3

= 1 = -5+3

= 1 = -2

Hence (1, 0.4) is not the solution to the equation.

Then we will use (1,0.8)

= 1 = -5x+3

= 1 = -5×1 + 3

= 1 = -5+3

= 1 = -2

Hence (1, 0.8) is not the solution to the equation.

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The correct response is 3. Havasupai Falls. We travelled from coast to coast, finding new places to visit and selecting the best landmark in each state. We decided on Havasupai Falls for Arizona.

Arizona's most well-known and current official moniker, "The Grand Canyon State," honours the state's most recognizable natural landmark, the Grand Canyon. Arizona is frequently referred to as the "Copper State," which indicates how abundant this mineral is there. More than 7.279 million people live in the stunning state of Arizona, which is situated in the southwest region of the country. Arizona is a great area to live and is frequently regarded as one of the best places in the nation to start a new life. It is known as The Grand Canyon State. Discover Arizona's snow in Flagstaff. Snow does fall in Flagstaff. plenty of snow! In its yearly assessment based on the state's Gross Domestic Product (GDP), population, and job growth, the American Legislative Exchange Council's most recent Rich States, Poor States research gave Arizona the highest ratings in the nation.

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Answer:

(x + y)^2 - 2xy

PLAIN language helps bridge the staggering illiteracy statistics in the United States by making information and communication more accessible, understandable, and inclusive for individuals with low literacy skills. It simplifies complex language, uses plain and straightforward terms, and employs clear formatting to enhance comprehension and promote literacy.

PLAIN language is a communication approach that focuses on making written and spoken information easier to understand. It involves using clear and concise language, avoiding jargon, simplifying complex concepts, and organizing content in a logical manner. By employing PLAIN language principles, organizations and institutions can create materials, such as instructional guides, educational resources, and public information, that are more accessible to individuals with low literacy skills.

In the context of staggering illiteracy statistics, PLAIN language plays a crucial role in breaking down barriers to literacy. By using plain and simple language, individuals with limited reading abilities can better comprehend information, instructions, and stories. This enables them to actively participate in activities such as reading to their children, promoting early literacy development and fostering a love for reading. PLAIN language also empowers individuals with low literacy to navigate important documents, understand health information, engage in civic participation, and access essential services. Overall, PLAIN language helps bridge the gap caused by illiteracy, making information more inclusive and promoting literacy for all.

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C. The probability of the type I error best defines the notion of the significance position of a thesis test.

The significance position, denoted by alpha( α), is the probability of rejecting the null thesis(H_o) when it's actually true. This is also known as a type I error, which occurs when we inaptly reject a true null thesis.

Option a isn't correct because the probability of rejecting H_o, whether it's true or not, isn't fixed and depends on the sample and the chosen significance position.

Option b isn't correct because it describes the p- value, which is a affiliated conception but not the significance position. The p- value is the probability of observing a sample statistic as extreme or more extreme than the one actually attained, assuming the null thesis is true.

Option d is also not correct because it describes the probability of a type II error, which occurs when we fail to reject a false null thesis. The probability of a type II error is denoted by beta( β) and is told by factors similar as sample size and effect size.

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The polar coordinates of the point (6, 6) are approximately (8.49, 0.79) in radians.

To convert the point (6, 6) from Cartesian to polar coordinates, we can use the formulas:

r = √(x² + y²)

θ = arctan(y/x)

Given that the point is (6, 6), we can substitute the values into the formulas to find the polar coordinates.

r = √(6² + 6²) = √(36 + 36) = √72 ≈ 8.49

θ = arctan(6/6) = arctan(1) = π/4 ≈ 0.79 (radians)

In polar coordinates, the value of r represents the distance from the origin (0, 0) to the point, and the value of θ represents the angle (measured in radians) between the positive x-axis and the line connecting the origin to the point. The angle θ is usually measured counterclockwise from the positive x-axis.

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Complete question is:

Convert the point from Cartesian to polar coordinates. Write your answer in radians. Round to the nearest hundredth.

(6,6)

v₁ = [[-1], [-2], [-2]] and v₂ = [[-4], [8], [-6]] are the vectors that satisfy the given conditions.

To write vector y as the sum of a vector v₁ in W and a vector v₂ orthogonal to W, we need to find the orthogonal projection of y onto the subspace W spanned by u₁ and u₂.

y = [[-5], [6], [-8]]

u₁ = [[1], [2], [2]]

u₂ = [[6], [2], [-5]]

To find v₁, we'll use the formula for the orthogonal projection

v₁ = ((y · u₁) / (u₁ · u₁)) × u₁

where "·" represents the dot product.

Calculating the dot products

y · u₁ = (-5 × 1) + (6 × 2) + (-8 × 2) = -5 + 12 - 16 = -9

u₁ · u₁ = (1 × 1) + (2 × 2) + (2 × 2) = 1 + 4 + 4 = 9

Substituting the values

v₁ = ((-9) / 9) × [[1], [2], [2]] = [[-1], [-2], [-2]]

Now, to find v₂, we'll subtract v₁ from y

v₂ = y - v₁ = [[-5], [6], [-8]] - [[-1], [-2], [-2]] = [[-4], [8], [-6]]

Therefore, we can write y as the sum of v₁ and v₂

y = v₁ + v₂ = [[-1], [-2], [-2]] + [[-4], [8], [-6]] = [[-5], [6], [-8]]

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Answer:

C has the lowest speed and travel distance.

Step-by-step explanation:

Point A has the furthest distance and the fastest time because it is higher than the other points, while point C has the lowest distance and the slowest time because its lower than all the other points.

Answer:

-512

Step-by-step explanation:

The common ratio is multiplying by 4, therefore 4 muliplyed by -128 is -512

Answer:

Shift 1 units towards left and then stretch vertically 3 

Answer:  The graph of y=x^2 would look like the one shown below.

Step-by-step explanation:

Answer:

it is 45 bc i think it is bc howugontellme

Step-by-step explanation:

Volume of a sphere is given by

\(V = \frac{4}{3} \pi {r}^{3} \)

Where r is the radius of the sphere

From the question

radius = 41 in

Substitute the value into the above formula

We have

\(V = \frac{4}{3} \times {41}^{3} \pi\)

\( = \frac{275684}{3} \pi\)

= 288695.6097

We have the final answer as

Hope this helps you

The answer on deltamath is

288695.6 in³

Answer:

256 ft

Step-by-step explanation:

Assuming f(t)=(1/4)√h, we can solve for h by setting 4=(1/4)√h.

4=(1/4)√h

16=√h

h= 16^2 =256 ft

Step-by-step explanation:

h = (4 ÷ ¼)²

h = (4 × 4)²

h = 16² = 256ft

By evaluating an exponential equation, we can see that the profit after 12 years is:

P(12) = $19,641.87

We know that at the moment the yearly profits of Sam's Sandwich Shop are $35,000.

These profits decrease by 4.7% each year, so after one year the new profit is:

P =  $35,000*(1 - 4.7%/100%)

P = $35.000*(1 - 0.047)

P = $35.000*0.953

Now, after x years the profit is modeled by the exponential equation:

P(x) = $35.000*(0.953)^x

To find the profit after 12 years, we just need to evaluate that exponential equation in x= 12, we will get:

P(12) = $35.000*(0.953)^12

P(12) = $19,641.87

That is the profit after 12 years.

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Answer:

a] 2pi/3

this is the answer

In this game, two robbers, R1 and R2, have just robbed a bank and find themselves in a hotel room with a suitcase containing 100 million dollars. Each robber wants to have the entire amount for themselves and is armed with a pistol.

However, their shooting skills are not great, with R1 having a 20% chance of killing their target if they shoot, and R2 having a 40% chance. The game proceeds as follows: first, R1 decides whether to shoot. If R1 shoots, R2 (if still alive) then decides whether to shoot. If R1 chooses not to shoot, R2 decides whether to shoot. If both survive, they split the money equally.

In the extensive form of the game, the initial decision node represents R1's choice to shoot or not. If R1 chooses to shoot, it leads to a chance node where R2's decision to shoot or not is determined. If R1 decides not to shoot, it directly leads to R2's decision node.

The outcome of each decision node is the respective robber's survival or death. At the final terminal nodes, the money is divided equally if both survive, or the surviving robber takes the entire amount if the other robber is killed.

The extensive form allows for a comprehensive representation of the sequential decision-making process and the potential outcomes at each stage of the game.

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If In a certain company, the measured thickness m of a helicopter blade must not differ from the standard s by more than 0.14 millimeters. The solution is 18.78 ≤m≤ 19.06.

In order to find the limits we would have to add Standard 18.92  to the expression and as well less the standard from the expression 0.14.

Given data:

Manufacturing engineer expression /m-s/ ≤ 0.14

Standard = 18.92 millimeters

Hence,

Limit of m:

18.92  ± 0.14

m - 18.92  ≤ 0.14

= 19.06

And

-(m- 18.92)  ≤ 0.14

m ≥ 18.78

So,

Solution =18.78 ≤m≤ 19.06

Therefore the solution is 18.78 ≤m≤ 19.06.

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Nitrogen gas with a mass of 50.0 g at 2.0 atm and 65 °C will occupy a volume of approximately 25 L.

The Ideal gas law or general gas equation is expressed as:

PV = nRT

Where P is pressure, V is volume, n is the amount of substance, T is temperature and R is the ideal gas constant ( 0.0821 Latm/molK )

Given that:

Mass of the Nitrogen gas m = 50.0 g

Pressure P = 2.0 atm

Temperature T = 65 °C = (65 + 273.15) = 338.15K

Amount of gas n = ?

Volume of gas V = ?

First, we determine the amount of nitrogen gas.

Note: Molar mass of Nitrogen = 28 g/mol

Hence

Number of moles of nitrogen gas (n) = mass / molar mass

n = 50.0g / 28g/mol

n = 25/14 mol

Substituting the values into the ideal gas law equation:

PV = nRT

V = nRT/P

V = ( 25/14 × 0.0821 × 338.15 ) / 2.0

V = 24.78 L

V = 25 L

Therefore, the volume of the gas is 25 L.

Option D) 25 L is the correct answer.

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Density = Mass / Volume, so you could use that information to solve for each value in the graph.

2. Mass = Density * Volume = 8.07 * 1.04 = 8.59 g

3. Volume = Mass / Density = 8.26 / 8.10 = 1.02 mL

4. Density = Mass / Volume = 7.91 / 0.99 = 7.99 g/mL

5. Mass = Density * Volume = 8.05 * 0.98 = 7.89 g

6. Volume = Mass / Density = 8.53 / 8.05 = 1.06 mL

But for a tree house my guess is that the floor boards are in metre

My reason is because the height of a person is metres perharps inches or cm but for ease of measurement steel tapes graduated in meter can be used to measure the floor boards

Answer:

12

Step-by-step explanation:

Type Into Calculator:

SAT-EDIT-TYPE IN X VALUES AND Y VALUES (FROM ORDERED PAIR)-STAT-CALC-4-ENTER

We have been given the domain-range pairs of the function g.

We have a pair of domain-range pair as (5, 2)

Therefore,

Next, we find

Lastly, we find:

1) Note that the combination of spinners that is not in their budget is: "22 Plastic and 10 Aluminum" (Option C)

2) Note that the graph that represents the inequality 10x-2y >4 is: Option A)

An inequality in mathematics is a relationship that makes a non-equal comparison between two integers or other mathematical expressions. It is most commonly used to compare two numbers on the number line based on their size.

1) In the first prompt, the Odd combination can be deciphered simply by observation. See the attached graph, which shows that you cannot get a combination of 10 Aluminium and 22 Plastic.

2) By plotting the equation, we can exact the graph which is similar. See the graph which is similar to Option A attached.

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Answer:

Point U

Step-by-step explanation:

The center point of the angle