After sales tax, a $310 chandelier costs $341. What is the sales tax percentage?
Write your answer using a percent sign (%).

Answer:

it is ether B or D cuz

Step-by-step explanation:

4+2+1=7  marbles

(4/1)+(2/1)+(1/1)=7/21

divide 21 by 7 that would = 3

Categorical data are the sort of variable that would need utilizing a population proportion hypothesis test rather than a population mean hypothesis test.

Data that cannot be easily gathered by counting is referred to as categorical data, which is another name for qualitative data. Hypothesis testing may be used with this type of data. Data are used in hypothesis testing to draw conclusions about population characteristics.

The findings are reached after first proposing a null hypothesis. Therefore, for qualitative or categorical data, a hypothesis test of the population is performed rather than a numerical test of the population mean.

To know more about categorical data visit:

https://brainly.com/question/28542438

#SPJ4

Answer:

Volume = 500 cm³

Step-by-step explanation:

Given the following data;

Side length of the base = 10cm

Height = 15 cm

To find the volume of pyramid with a square base;

Mathematically, the volume of a pyramid with a square base is given by the formula;

Volume of square-based pyramid = A(h/3)

Where;

A is the area of the square base.

h is the height of the pyramid.

First of all, we would find the area of the square base;

Area of square, A = L²

A = 10²

A = 100 ft²

Next, we find the volume of the square-based pyramid;

Volume = 100(15/3)

Volume = 100 * 5

Volume = 500 cm³

Answer:

\(f'(x)= \frac{13}{(2x+3)^2}\\\)

Step-by-step explanation:

\(f(x)= \frac{3x-2}{2x+3} \\\)

\(f'(x)=\frac{dy}{dx} = \frac{d}{dx}(\frac{3x-2}{2x+3})\\ f'(x)= \frac{(2x+3)\frac{d}{dx}(3x-2)-(3x-2)\frac{d}{dx}(2x+3) }{(2x+3)^{2} } \\f'(x)= \frac{(2x+3)(3)-(3x-2)(2)}{(2x+3)^{2} } \\\)

\(f'(x)= \frac{6x+9-6x+4}{(2x+3)^{2} }\\ f'(x)= \frac{13}{(2x+3)^2}\\\)

Answer:

\(\left \{ {{p=3} \atop {q=1}} \right.\)

Step-by-step explanation:

First, we'll expand \((x-p)^2+q\). It's equal to \(x^2-2px+p^2+q\).

Then, we'll compare this to \(x^2-6x+10\).

Answer:

p = 3, q = 1

Step-by-step explanation:

Using the method of completing the square

add/ subtract ( half the coefficient of the x- term )² to x² - 6x

x² + 2(- 3)x + 9 - 9 + 10

= (x - 3)² + 1 ← in the form (x - p)² + q

with p = 3 and q = 1

Answer:

9.25 + 25.75p ≤ 245

Step-by-step explanation:

I didn't see any inequality options to select from . . .

Answer:

i will help you.......

Answer:

v=9

Step-by-step explanation:

-18 = 7v + 9 - 10v

combine like terms

-18 = -3v + 9

-9             -9

-27 = -3v

divide both sides by -3

9 = v

or

v = 9

Hope this helps!!!

Answer: yes

2x^2yx(x^2+2y)

Step-by-step explanation:

2x^4y+4x^2y^2

2x^2yx(x^2+2y)

Answer:

Buy Two tshirts and a pair of pants....

Step-by-step explanation:

Total purchase -

$9.85 + $56.00 = $65.85

Shipping charges is 20%  -

65.85 * 0.2 = 13.17

Total (including shipping) = $79.02

If you purchace two t shirts and a pair of pants then you dont have to pay for the shipping therefore,

Total purchase will be -

$9.85 + $56.00 + $9.85 = $75.70

Puchasing 2 tshirts will be $3.32 cheaper....

Answer:

You should buy a second t-shirt.

Step-by-step explanation:

The total without shipping comes out to $65.85. Add the 20% shipping by multiplying .20 by the total, $65.85, and you get $65.85 plus $13.17, the total being $79.02. Now, if you added another shirt for $9.85, your total comes out to $75.70, which barely qualifies for free shipping. In other words, yes, you should purchase a second shirt because you would actually save money, almost $4.

Two sample t-test is used when the two samples of the data are statistically independent and the paired t-test is used, when data is in the form of matched pairs

The two-sample t-test defined as the method used to test whether the unknown population means of two groups are equal. The two sample t-test is also called independent samples t-test. Because the two samples of the data are statistically independent.

A paired t-test is used to find the difference between two variables usually separated by time for the same subject. By using the paired t-test  we can find the mean difference between pairs of measurements is zero or not. So  paired t-test is used, when data is in the form of matched pairs

Hence, two sample t-test is used when the two samples of the data are statistically independent and the paired t-test is used, when data is in the form of matched pairs

Learn more about t-test here

brainly.com/question/15870238

#SPJ4

Answer:

m = 2

Step-by-step explanation:

6m = 12

6 × m = 12

m = 12 ÷ 6

m = 2

If it helps, then pls like and mark as brainliest!

Answer:

m = 2

Step-by-step explanation:

6m = 12

6m = 6^2

• get rid of common element which is 6. Devide both side by six.

6m ÷ 6 = 6^2 ÷ 6

m = 2

Answer:

the answer is 9

Step-by-step explanation:

I just did the test

Answer:

B

using SOHCAHTOA

COS THETA WILL BE EQUALS TO ROOT 5/3 AND TAN THETA WILL BE EQUALS TO 2ROOT 5/3

Answer:

B.

Step-by-step explanation:

First, note that since \(sin(\theta)=2/3\), this means that the opposite side is 2, the hypotenuse is 3, and the last, adjacent side is \(\sqrt{5\\\).

Also note that we are told that \(sec(\theta)<0\). This means that \(\theta\) cannot be in quadrants 1 nor 4 because (remember All Students Take Calculus?) in those quadrants cosine and secant are positive. Also, we know that sine is positive so we can conclude that \(\theta\) is in the second quadrant.

In the second quadrant, sine is positive, cosine is negative, and tangent is negative. Now we can answer the question. We already know the side lengths: opposite=2, adjacent=\(-\sqrt{5}\) (because it's in Quadrant II), and hypotenuse=3.

Therefore...

\(cos(\theta)=-\sqrt{5} /3\)

\(tan(\theta)=2/(-\sqrt{5})=-(2\sqrt{5}/5)\)

a) The equation 1 has an infinite number of solutions, as both linear functions have the same slope and internet, hence Nyoko is incorrect.

b) Nyoko cannot find a value of b so that the equation has no solutions.

The equation 1 is given as follows:

6x - 5 + 2x = 4(2x - 1) - 1.

Combining the like terms and applying the distributive property, the simplified equations are given as follows:

8x - 5 = 8x - 4 - 1

8x - 5 = 8x - 5.

As they are linear functions with the same slope and intercept, the number of soltuions is of infinity.

The equation 2 is given as follows:

3x + 7 = bx + 7.

A system of linear equations will have zero solutions when:

As they have the same intercept for this problem, it is not possible to attribute a value of b such that the equation will have no solution.

More can be learned about linear functions at https://brainly.com/question/24808124

#SPJ1

A line graph is best suited for showing changes in statistics over time or space.

Line graphs are commonly used to visualize trends, patterns, and fluctuations in data over a continuous or discrete period. The x-axis represents time or space, while the y-axis represents the corresponding statistic being measured. The line graph connects the data points, allowing for a clear representation of how the statistic changes over the given time or space interval.

To know more about line graphs, visit:

https://brainly.com/question/31942903

#SPJ11

Both the given statements are correct.

Given that Rafael and Salvador can tabulate a certain set of data in 2 hours, we need to find the time in which Rafael tabulate the data working alone,

Also verify the given statements,

Let's assume that Salvador takes x hours to tabulate the data working alone.

From statement (1), we know that Rafael can tabulate the data in 3 hours less time than Salvador.

Therefore, Rafael can tabulate the data in (x - 3) hours.

When Rafael and Salvador work together, they can complete the task in 2 hours.

So, their combined work rate is 1/2 of the task per hour.

The work rate of Rafael is 1/(x - 3) of the task per hour, and the work rate of Salvador is 1/x of the task per hour.

Since their combined work rate is 1/2, we can write the equation:

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

To solve this equation, we can find a common denominator and simplify:

2x + 2(x - 3) = x(x - 3)

2x + 2x - 6 = x² - 3x

4x - 6 = x² - 3x

Rearranging the equation:

x² - 7x + 6 = 0

Factoring the quadratic equation:

(x - 6)(x - 1) = 0

This gives us two possible values for x: x = 6 and x = 1.

However, x cannot be 1 because it would mean Salvador completes the task in 1 hour, and Rafael would not be able to complete it in 3 hours less time (as stated in statement (1)).

Therefore, the only valid solution is x = 6.

So, Salvador takes 6 hours to tabulate the data working alone, and Rafael takes 6 - 3 = 3 hours to tabulate the data working alone.

Therefore, Rafael can tabulate the data working alone in 3 hours. Statement (1) is true.

Statement (2) is not necessary to solve the problem but it is consistent with the result. It states that Rafael can tabulate the data in 1/2 the time of Salvador, which is true since Salvador takes 6 hours and Rafael takes 3 hours.

Learn more about equations click;

https://brainly.com/question/29538993

#SPJ4

Answer:A. -1.11x^2+ 3.74+ 10.64

Step-by-step explanation:

a. p. e. x. (just took the test)

Answer:

A

Step-by-step explanation:

I just got the question right on the test lol!!

Answer:

60°

Step-by-step explanation:

The sum of angles at any one vertice is 360°.

Sum of angles (exterior and interior) = 3 x 360° = 1080°

The interior area of a triangle is always 180°. Hence exterior area = 1080° - 180° = 900° = (6 + 6 + 3)x

15x = 900°

x = 60°

In this case we are dealing with an arithmetic sequence, we can represent this kind of sequences with the formula:

f(n) = f0 + d*n

Where f0 is the first term of the sequence and d is the difference between one term and the term that is previous to it.

In this case, f0 equals 7, since this is the value of the first term.

We can find d by taking two terms, let's take for example 1 and 4, by subtracting 4 from 1 we get:

d = 1 - 4 = -3

Then d equals -3 and the formula of the sequence is:

f(n) = 7 + (-3)n

f(n) = 7 - 3n

We can calculate the 75th term by replacing 75 for n, then we get:

f(75) = 7 - 3 * 75 = -218

Then f(75) equals -218

The answer is -178 :))))))))))))))))))))))))))

Answer:

5 hr

Step-by-step explanation:

tony worked for 6 hr on sunday so he got $30 and he will only need 5hr bc 5hr x $5 = 25 so in total 55

The number of hours on Saturday in which Tony did babysit will be given as 5 hours.

A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.

Tony gets paid $5 per hour to babysit his cousin.

This weekend, he babysat on both Saturday and Sunday.

He made a total of $55.

Tony babysat for 6 hours on Sunday.

Let the number of hours be x on Saturday.

Then we have the equation that will be

x × 5 + 6 × 5 = 55

       5x + 30 = 55

                5x = 25

                   x = 5

More about the linear system link is given below.

https://brainly.com/question/20379472

Jody has created a systematic sampling error by forgetting to include a segment of the population that is relevant to the study.

Systematic sampling is a sampling method where every nth member of a population is selected to be part of the sample. In Jody's case, she forgot to include a specific segment of the population, which means that the sampling process was not systematic. This error can introduce bias and affect the representativeness of the sample.

No calculations are required for this type of error.

Jody's mistake in not including a relevant segment of the population has resulted in a systematic sampling error. To ensure the accuracy and validity of the study, it is important to rectify this error by including the missing segment or adjusting the sampling method accordingly.

To know more about sampling error follow the link:

https://brainly.com/question/30765764

#SPJ11

This refers to the ratio between the scale of a given original object and a new object. It is its representation but of a different size (bigger or smaller). For example, if we have a rectangle of sides 2 cm and 4 cm, we can enlarge it by multiplying each side by a number, say 2.

Solving for the area and scale factor we have:

L= 5 units

W = 2 units

A = (5 x 2)

A = 10 square units.

A= (Scale factor of  L * W)*  L * W

= (2 x 2 x 5 x 2)

A = 40 square units.

A= (Scale factor of  L * W)*  L * W

= (3 x 3 x 5 x 2)

A= 90 square units

Learn more about area on

https://brainly.com/question/29082330

#SPJ1

Answer:

\(\frac{1}{2}(x-t-155)\)

Step-by-step explanation:

Total wages:   \(x\)

Pays tax \(t\):        \(x-t\)

Pays rent of 155:    \(x-t-155\)

Shares what's left between 2:   \(\frac{x-t-155}{2}\)

So each gets:  \(\frac{1}{2}(x-t-155)\)

One of the greatest advantages of surveys is that researchers can examine variables that are difficult to observe directly. However, surveys can be biased but still collect objective information.  

Researchers can be confident that respondents answered honestly in surveys because they typically use anonymity to protect respondents' identities. Additionally, surveys allow researchers to reach a large number of people, making them more representative of the population they are studying than other methods of data collection. Surveys can also be biased, as they rely on the respondents' self-reported answers.

Respondents may be influenced by the way the question is phrased or by social desirability bias, which is the tendency to give answers that are socially acceptable or favorable, rather than honest. However, researchers can still collect objective information from surveys by using appropriate sampling techniques and statistical analysis to account for potential biases.

To know more about variables visit:-

https://brainly.com/question/15078630

#SPJ11

To find the corresponding angles, all we have to do is find what fraction of 360° the angle is:

We can check our answer by adding all the fractions. It should add up to one:

Since  ³/₈ + ³/₁₀ + ³/₂₀ + ¹/₈ + ¹/₂₀ = 1

then we did well.

All the best.