Write the nature of roots of the quadratic equation 9x^2 -6x+2

(a) we are saying that the probability of rejecting a null hypothesis that is actually true is 0.001 or 0.1%.

(b) we are saying that the probability of rejecting a null hypothesis that is actually true is 0.05 or 5%.

(c) we are saying that the probability of rejecting a null hypothesis that is actually true is 0.10 or 10%.

a. If α is assigned the value 0.001, we are setting a very low significance level for the hypothesis test. This means that we are willing to accept only a very small probability of making a Type I error. Specifically, we are saying that the probability of rejecting a null hypothesis that is actually true is 0.001 or 0.1%.

b. If α is assigned the value 0.05, we are setting a standard significance level for the hypothesis test. This means that we are willing to accept a probability of up to 0.05 or 5% of making a Type I error. Specifically, we are saying that the probability of rejecting a null hypothesis that is actually true is 0.05 or 5%.

c. If α is assigned the value 0.10, we are setting a relatively high significance level for the hypothesis test. This means that we are willing to accept a probability of up to 0.10 or 10% of making a Type I error. Specifically, we are saying that the probability of rejecting a null hypothesis that is actually true is 0.10 or 10%.

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Answer:

each side of the square is 25cm

Step-by-step explanation:

this is because of two things:

1. a square has equal sides

2. the perimeter is all the sides added together.

so if you call the length of one side x, you can make this equation:

x + x + x + x = 100

combine like terms

4x = 100

divide both sides by 4

x = 100/4

x = 25

Answer:

25 cm

I hope this helps!

True. Exception reports show a greater level of detail than is included in routine reports.

Exception reports are reports that help in identifying data that does not conform to expected patterns. Exception reports show information about an exception in the data set.

This helps to identify irregularities or anomalies in data or system operations.Exception reports are used to analyze system performance, monitor resource consumption, and to detect unusual activity.

This type of report is important to identify issues or errors, where the routine reports or standard reports would not provide enough detail or insight to do so.

It provides detailed information on any unusual event or anomaly that occurred beyond the usual course of events or processes.Exception reports are generated and distributed when the data is not expected or when an event occurs that is outside of what is considered typical.

For example, a financial system might generate an exception report if a transaction is entered that exceeds the maximum allowed amount. This report would show the details of the transaction and highlight the exception.

The purpose of exception reports is to provide users with a higher level of detail than they would find in routine reports. Exception reports are used to highlight significant data, which will be used for further analysis or action.

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Answer:

B. 40

Step-by-step explanation:

It looks like a 90-degree angle so...

90 - 30 = 60

60 - 20 = 40

40 would be your final answer.

The word or phrase no which best describes this kind of advertising is inaccurate.

The correct answer option is option B

Mode refers to a statistical data which occurs most in a given set of data.

Advertisement can be defined as a commercial solicitation by a producer to the public in order to buy his product.

Given data:

$7, $8, $8, $15, $15, $16, $17, $18, and $20

Hence, it can be said that the mode of the most popular meals is not $8

Therefore, using $8 as a kind of advertisement for the mode of most popular meals is inaccurate

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There is 34 teachers who teach on both school. The name of the schools are albers and bothel.

What is a linear equation?

The equation for a linear equation in one variable is written as ax+b = 0, where a and b are two integers, and x is a variable. This equation has only one solution. For instance, the linear equation 2x+3=8 only has one variable.

Given that, the number of teacher in albers elementary school is 57.

The number of teacher in bothel elementary school 71.

Total number of teacher at both schools is 94.

Assume that a number of teacher is common in both school.

The number of teacher who tech only at albers elementary school is 57 - a.

The number of teacher who tech only at bothel elementary school is 71 - a.

The total number of teacher is

The number of teacher who tech only at albers elementary school + number of teacher who tech only at bothel elementary school + the number of teacher who teach at both schools

= 57 - a +  71 - a + a

= 128 - a

Therefore,

128 - a = 94

Subtract 128 from both sides:

-a = -34

Divide both sides by -1:

a = 34.

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84.58°F is the temperature of the liquid after 7 hours.

To determine the temperature of the liquid after 7 hours using Newton's cooling model, we can use the formula:

T(t) = Tm + (Ti - Tm) * e^(-kt)

Where:

T(t) is the temperature at time t,

Tm is the surrounding temperature (air temperature),

Ti is the initial temperature of the liquid,

k is the cooling constant, and

e is the base of the natural logarithm.

In this scenario, the initial temperature of the liquid (Ti) is 170°F, the surrounding temperature (Tm) is 76°F, and the cooling constant (k) is given as 0.34.

Now, let's substitute the values into the formula and solve for T(7):

T(7) = 76 + (170 - 76) * e^(-0.34 * 7)

Using a scientific calculator or a computer program, we can evaluate the expression inside the parentheses first and then calculate the exponential term. After performing the calculations, we find:

T(7) ≈ 76 + (94) * e^(-2.38)

T(7) ≈ 76 + (94) * 0.0913

T(7) ≈ 76 + 8.58

T(7) ≈ 84.58°F

Therefore, the temperature of the liquid after 7 hours will be approximately 84.58°F.

Newton's cooling model describes the cooling or heating of an object in relation to its surrounding environment. It assumes that the rate of temperature change is proportional to the difference between the object's temperature and the surrounding temperature. By applying the formula and substituting the given values, we can calculate the temperature of the liquid at the specified time. The model is commonly used in various fields, including physics, engineering, and environmental sciences, to analyze heat transfer processes.

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Answer:

r = 4.

Step-by-step explanation:

0.4r = 1.6

4r = 16

2r = 8

r = 4.

0.4(4) = 1.6

1.6 = 1.6

Hope this helps!

Answer:

6

Step-by-step explanation

hope this answer is right

Step-by-step explanation:

The total length is 66, so 66 - 11 = 55, then they are 5 (a) so 55/5 = 11, so the answer is 11

Answer: Use a algebra calculator

Step-by-step explanation: go to google

Answer:

233.3 repeating mg

Step-by-step explanation:

Your teacher was really kind to give you the equation.

9x=2100

divide both sides by 9

we get x= 233.3 repeating mg

The antibiotic given in each​ dose in every 4 hours will be 233.33 mg.

It is given that a patient is given 2100 milligrams of antibiotic over a period of 36 hours.

We have to find that how much antibiotic should be given in each​ dose if antibiotic is to be given every 4 hours.

What is the unitary method?

The unitary method is a method in which we find the value of a unit and then the value of the required number of units.

As per the question ;

In 36 hours dose given is equal to 2100 milligrams.

So,

In 1 hour dose given will be = 2100 / 36

Hence ;

In 4 hours dose given will be = \(\frac{2100}{36}\) × 4

= \(\frac{2100}{9}\)

= 233.33 mg of dose in 4 hours

Thus , antibiotic given in each​ dose in every 4 hours will be 233.33 mg.

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The plane travel 457657656.894 miles in 333 hours at the same speed.

The plane is travelling at a speed of 762762762 miles in 555 hours.

Considering that the plane traveled 762762762 miles in 555 hours.

If I write that as a fraction it is 762762762mi/555hours.

I can make this a unit rate by saying,

762762762 / 555 = 762762762 ÷ 555= 1374347.318.

This means plane is travelling at a speed of 152.4 miles in an hour.

So distance travelled by plane in 333 hours can be find out

By using,

Distance = speed x time

=1374347.318 x 333

=457657656.894

So plane travel 457657656.894 miles in a span of 333 hours.

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Answer:3.6

Step-by-step explanation: your just duh and duh

We want to find the perimeter of the fifth square in the given sequence.

The perimeter of the fifth square is 1cm.

Let's see how to get that:

The perimeter of the first square is 16cm.

Remember that the perimeter of a square of side length S is:

P = 4*S

Then the side length of the first square is given by:

16cm = 4*S

16cm/4 = S = 4cm

Then she connects the midpoints of the sides to form another square (actually four equal squares).

The midpoint would be at half of the side length of the square, then the side length of the new squares is 4cm/2 = 2cm.

For the third square, the side length is divided by two again, to get 2cm/2 = 1cm

For the fourth square this happens again: 1cm/2 = 0.5cm

For the fift square this happens again: 0.5cm/2 = 0.25cm

Then we have a square of side length equal to 0.25cm, the perimeter will be:

p' = 4*0.25cm = 1cm

The perimeter of the fifth square is 1cm.

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The given system of equation are :

-6x - y = -16

-6x -5y = -8

On subtracting both the equation we get :

-6x -y -(-6x -5y) = -16 -(-8)

-6x -y +6x +5y = -16 +8

-6x + 6x +5y -y = -8

4y = -8

4y = -8

Divide both side by 4:

4y/4 = -8/4

y = -2

Substitute the value of y =- 2 in the any one equation:

-6x - y = -16

-6x - (-2)= -16

-6x + 2 = -16

-6x = -16 -2

-6x = -18

x = 3

Answer : x = 3, y = -2

354 Valencia student tickets and 133 non-student tickets were sold.

Let's use algebra to solve the problem. Let

x be the number of Valencia student tickets sold

y be the number of non-student tickets sold

We know that

x + y = 487 (the total number of tickets sold is 487)

14x + 25y = 8391 (the total receipts from ticket sales is $8391)

We can use the first equation to express one of the variables in terms of the other. For example, we can solve for y

y = 487 - x

Here we have to use the substitution method, we can then substitute this expression for y into the second equation

14x + 25(487 - x) = 8391

Simplifying and solving for x

14x + 12275 - 25x = 8391

-11x = -3884

x = 354

So, 354 Valencia student tickets were sold. We can use the first equation to find y

x + y = 487

354 + y = 487

y = 133

So, 133 non-student tickets were sold.

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Answer:

\(circumference = 2\pi \: r \\ = 2 \times \frac{22}{7} \times 14 \\ 88 \: m \: fence\)

Answer:

y = \(-\frac{1}{3}\)

\(2\frac{2}{3}=x\)

Step-by-step explanation:

To solve a system of equations, solve one or both of the equations for the same variable. Then multiply one of the equations such that the coefficients of one variable are the additive inverse of the variable in the other equation. After doing so, add the two equations, then solve for the other variable using inverse operations. Finally, substitute the value of the other variable into one of the original equations in the system and solve for the unknown variable.

2x + y = 3

y = x - 2

First, manipulate the first equation such that the equation is solved for (y), this can be done using inverse operations,

y = 3 - 2x

y = x - 2

Now multiply the second equation by (2) so that the (x) coefficients are additive inverses of each other,

y = 3 - 2x

2y = 2x - 4

Add the equations,

3y = -1

Inverse operations,

3y = -1

/3     /3

y = \(-\frac{1}{3}\)

Now back solve, substitute the value of (y) into the equation and solve for (x),

\(y=x-3\\\)

Substitute,

\((-\frac{1}{3})=x-3\)

+3

\(2\frac{2}{3}=x\)

Answer:

2

Step-by-step explanation:

\(m= \frac{y2 - y1}{x2 - x1} \)

put the values you will get your answer.

Answer:

an integer, a real number

Step-by-step explanation:

According to the table the independent variable remains constant for change in the dependent variable.

There are dependent and independent variables in statistical modelling, experimental sciences, and mathematical modelling.

Dependent variables get their name from the fact that during an experiment, their values are assessed under the assumption or obligation that they rely on the dependent variable as a result of a rule or law. Independent variables are ones that are not seen as being reliant on any other factors in the context of the experiment in question.

In this respect, frequent independent variables include things like space, density, mass, rate of fluid flow, and a particular value among some observed phenomena of interest. Every time, the variability of the dependent variable—also known as the regressor in a statistical context—is being examined. any element in an experiment .

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The population of ages at inauguration of all u. s. presidents is option B. With a data et that is loss​ small, the true nature of the distribution cannot be seen with a histogram.

The distribution is not always dramatically far from being a ordinary distribution with a bell form, so there is not robust proof towards a normal distribution. A histogram is a graph such as bars of equal width drawn adjoining to each different, until there aren't any gaps within the facts. The horizontal scale represents lessons of quantitative information values, and the vertical scale represents frequencies. the heights of the bars correspond to frequency values.

Histograms are not free of biases. clearly, they're arbitrary and may lead to wrong conclusions about data. if you need to visualize a variable, higher to select a distinct plot.

Disclaimer:- your question is incomplete,please see below for complete questuon.

A.This data set would yield a histogram that is not​ bell-shaped.

B.With a data et that is loss​ small, the true nature of the distribution cannot be seen with a histogram.

C.There must be an even number of data values in the data set to create a histogram.

D.Adequate class boundaries for a histogram cannot be found with this data set.

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Answer:

last one is the constant function

Answer:

50?

Step-by-step explanation:

it's 50 20+25i don't even know if this is the correct answee

Answer: d ;)

Step-by-step explanation:

Just match the info on the table to the graph

Answer:

y - 1 = 4/5 (x + 2)

Step-by-step explanation:

the formula for point slope form is y - y = m (x - x)

if any of the number of the point is negative, then it would be a positive when in the equation. y - 1 = 4/5 (x - (+ x))

Answer:

C

Step-by-step explanation:

Answer:

200 dollars

Step-by-step explanation:

Answer:

$200.

Step-by-step explanation:

$200 because if they save $120 then $80, $200.

(120+80=200.)

Hope this helps plz hit the crown :D

sorrry for not answering earlier

Answer:

7 because it does not have a y on the 7

Explanation:

We have a triangle with sides of:

Plug those values into the pythagorean theorem equation.

a^2+b^2 = c^2

18^2+24^2 = 30^2

324+576 = 900

900 = 900

We get a true equation, so this triangle is a right triangle.