Use the following data sets to answer the question.
Set {12, 9, 30, 1, 15, 10,
A:
12}
Set
B:
9, 30, 12, 3, 16, 11,
18}
Which statement about the shape of the data is true?
Both sets have the same median, but Set A has a larger mean.
O Both sets have the same median, but Set B has a larger mean.
O Set B has a larger mean and median than Set A.
O Set A has a lower median but a higher mean than Set B.

Use The Following Data Sets To Answer The Question.Set {12, 9, 30, 1, 15, 10,A:12}SetB:9, 30, 12, 3,

Answers

Answer 1

Answer:

Both have the same median but set A has a larger mean.

Step-by-step explanation:

You're welcome.

Answer 2
Answer:
A
Step-by-step explanation:
Each set has a mean of 12, But the mean of set A is 12.71 and the mean of set b is 14.14 so the answer would be A.

Related Questions

someone help me asap

Answers

The answer for the following equation is


Solution

16


*i might pass out

Which ratio is equivalent to 5:9

Answers

10:18,15:27,20,36

Hope this helps :)
10:18, 15:27, and 20:36

Belle and Ling are collecting clothes for a clothing drive. Ling collected 1/5 as many clothes as Belle did. If Belle collected 4 bags of clothes, how many bags of clothes did Ling collect?

Answers

In the given word problem, Ling collected 4/5 bags.

What is a word problem?

A word problem is a few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

Given that, Belle and Ling are collecting clothes for a clothing drive. Ling collected 1/5 as many clothes as Belle did and Belle collected 4 bags of clothes, we need to find how many bags of clothes did Ling collect.

Since, Belle collected 4 bags, and Ling is collected 1/5 of the Belle collection,

So, Ling collected = 4 x 1/5 = 4/5

Hence, Ling collected 4/5 bags.

Learn more about word problem, click;

https://brainly.com/question/29203255

#SPJ9

Please Help, Find the sum of each infinite geo sequence
-50, -25, -12.5, ...

Answers

The given sequence is an infinite geometric sequence with a common ratio of -2. The first term of the sequence is -50, and each subsequent term is obtained by multiplying the previous term by -2.

The formula for the sum of an infinite geometric series with first term a and common ratio r is:

S = a / (1 - r)

Plugging in the values for a and r, we have:

S = -50 / (1 - (-2)) = -50 / (1 + 2) = -50 / 3

Therefore, the sum of the infinite geometric sequence -50, -25, -12.5, ... is -50 / 3.


Jordan is a wildlife photographer. Today they are taking a picture of a Mountain
Goat. The Mountain Goat is 5,000 feet up a mountain and Jordan is 200 feet from
the base of the mountain. What angle of elevation does the camera need to be at for
the picture? Round to the nearest tenth.

Answers

The angle of elevation needed for the picture would be 26.7 degrees.

if 0 < 0 < pi/2, as 0 increases, the value of cos0 and the value of sin0

Answers

As the angle increases from 0 to π/2, the value of sine increases, and the value of cosine decreases.

Trigonometry is a branch of mathematics that deals with the relationships between angles and sides of triangles.

Let us first understand the concept of sine and cosine. In a right-angled triangle, the sine of an angle is defined as the ratio of the length of the side opposite to the angle and the length of the hypotenuse. Similarly, the cosine of an angle is defined as the ratio of the length of the adjacent side and the length of the hypotenuse.

As the angle θ increases from 0 to π/2, the length of the opposite side (the numerator in sine) of the triangle increases, and the length of the hypotenuse (the denominator in sine) remains the same. Therefore, the value of sine increases as θ increases.

On the other hand, as the angle θ increases from 0 to π/2, the length of the adjacent side (the numerator in cosine) decreases and the length of the hypotenuse (the denominator in cosine) remains the same. Therefore, the value of cosine decreases as θ increases.

This behavior is consistent with the fact that sine is an increasing function, while cosine is a decreasing function within this range of angles.

To know more about trignonmentry here.

https://brainly.com/question/22986150

#SPJ4

Complete Question:

If 0< θ <π/2, as Theta increases, the value of

cos(θ) [Decreases/Increases/Remains The Same]

and the value of sin(θ) [Decreases/Increases Remains The Same]​

answer for this and example ​

Answers

Answer:

e would equal a half because it's in the middle

what is the probability of getting a number less than 2 or a prime number upon rolling a six-sided die? a.) 1 half b.) 2 over 3 c.) 1 third d.) 5 over 6

Answers

Answer:

b) 2/3

Step-by-step explanation:

For a 6-sided die

total number of numbers: 6

numbers less than 2: 1

prime numbers: 2, 3, 5

total number of desired outcomes: 1 + 3 = 4

p(less than 2 or prime) = 4/6 = 2/3

sophia paid $3,360,00 in taxes in 2010. her taxes rose to $4,848,60 in 2011 what was the percentage increase in her taxes from 2010 to 2011

Answers

The percentage increase in her taxes from 2010 to 2011 is 44.30%.

What is the percentage?

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given, Sophia paid $3,360,00 in taxes in 2010 and her taxes rose to $4,848,60 in 2011.

So, The amount of tax increase is $(484860 - 336000) = $148860.

Therefore, The percentage increase is,

= (148860/336000)×100%.

= 44.30%.

The net amount change will now be divided by the starting total, and the result will be multiplied by 100% to determine the percentage change.

Learn more about percentages here :

https://brainly.com/question/24159063

#SPJ9

Solve for the value of d.
(8d+4)⁰
(6d+8)⁰

Answers

Hi there, here's your answer:

Given 2 angles:

(6d + 8)° and (8d + 4)°

Observe the figure carefully. You will notice that the two angles form a linear pair.

We know that in a linear pair, sum of the two angles = 180°.

Hence,

(8d + 4 + 6d + 8)° = 180°

(14d + 12)° = 180°

(14d)° = (180 - 12)°

= 14d = 168°

Or

d = 12

Thus, we find the value of d to be d = 12.

Hope it helps! Please mark as Brainliest!

composition is sometimes referred to as a(n) . 1) is-a relationship. 2) has-a relationship. 3) many-in-one relationship. 4) one-to-many relationship.

Answers

Composition is sometimes referred to as has-a relationship.

A form of aggregation, a composition association relationship represents a whole-part relationship. The lifetime of the part classifier is a function of the lifetime of the whole classifier, according to a composition association relationship.

Data typically only flows in one direction (from the whole classifier to the part classifier) in a composition association relationship. For instance, if a student is removed from a class that has a composition association relationship with a schedule class, the schedule is also removed.

Any association may be named to describe the type of connection between the two classifiers; however, names are not required if association end names are used.

know more about relationship click here;

https://brainly.com/question/30295270

#SPJ4


Two factory plants are making TV panels. Yesterday, Plant A produced 4000 fewer panels than Plant B did. Four percent of the panels from Plant A and 2% of
the panels from Plant B were defective. How many panels did Plant B produce, if the two plants together produced 500 defective panels?
14

Answers

The number of panels that Plant B produced is; 11000 panels

How to solve algebra word problems?

We are told that Plant A produced 4000 fewer panels than Plant B did.

Thus;

A = B - 4000    -----(1)

Four percent of the panels from Plant A and 2% of the panels from Plant B were defective. Thus;

0.04A + 0.02B = 500   ------(2)

Put eq 1 in eq 2 to get;

0.04(B - 4000) + 0.02B = 500

0.04B - 160 + 0.02B = 500

0.06B = 660

B = 660/0.06

B = 11000 panels

Read more about Algebra Word Problems at; https://brainly.com/question/21405634

#SPJ1

Find the volume of this prism.

Answers

Answer:

396cm^3

Step-by-step explanation:

use formula V=Area of base * Height that is V=1/2b*h *Height

If five people share three cartons of chow mein what is each person’s share

Answers

Answer:

1.66

Step-by-step explanation:

hope this helps

Answer:

3/5 or 0.8

Step-by-step explanation:

3 Cartons, divided by 5 people =

3/5 or 0.8

Mr. Schwartz builds toy cars. He begins the week with a supply of 85 wheels, and uses 4 wheels for each car he builds. Mr. Schwartz plans to order more wheels once he has fewer than 40 wheels left.
The inequality that can be used to find the number of cars, x, Mr. Schwartz builds before he places an order for more wheels is

Answers

Answer:

solution: Mr. Schwartz will need to order more wheels after building 12 cars.

explanation:

Mr. Schwartz begins with total number of wheels = 85

he has to order more wheels once he left with less than 40 wheels

so min. no. of wheels he can use before ordering more wheels = 85-40 = 45

Mr. Schwartz uses 4 wheels to build 1 car

Mr. Schwartz uses 45 wheels to build 45÷4 = 11.25 cars

then, if he builds 12 cars then he needs 12×4 = 48 wheels

total supply of wheels he begins with = 85

wheels he used to build 12 cars = 48

so total number of wheels remaining are = 85-48 = 37

since 37 is less than 40 so after building 12 cars Mr. Schwartz need to order more wheels.

#CarryOnLearning :)

Gina's goal is to raise $160 for the school through her ticket sales. if she is selling the tickets for $3 each, what is the minimum number of tickets Gina needs to sell in order to earn $160?

Answers

Answer: All she needs to sell is 53 tickets

Step-by-step explanation: You divide 160 by 3 which gives you 53.3333 so you take the decimal place and get rid of it and it gives you 53. So she needs to sell at least 53 tickets to reach her goal

Evaluate the expression x² + 3x for x = 4.

Answers

To evaluate the expression x² + 3x for x = 4, we simply substitute 4 for x and simplify and we get 28.

What is expression ?

An expression is a combination of values, variables, and operators that represent a specific computation or operation. Expressions can be used to perform various operations such as arithmetic, logical, relational, and more. The value of an expression is determined by evaluating the expression, which involves simplifying and reducing it to a single value. In programming, expressions are a fundamental building block, and are used to write algorithms and control the flow of execution of a program.

To evaluate the expression x² + 3x for x = 4, we simply substitute 4 for x and simplify:

x² + 3x = 4² + 3 * 4 = 16 + 12 = 28

So, when x = 4, the expression x² + 3x = 28.

Hence, after evalution of the expression we get the result 28.

Learn more about evalution of the expression click here:

https://brainly.com/question/4344214

#SPJ1

The altitude of an airplane coming in for a landing is represented by the equation shown below, where y represents the altitude, in feet, of the plane and x represents the number of minutes the plane has been decending: y = -128x + 3,840

Part A: Create a table for the values when x + 0, 5, 8, 10, 30. Include worked-out equations used to identify the values within the table.

Part B: Identify the altitude after 5 minutes and after 30 minutes. Use 1-2 sentences to explain the altitude at these two times and describe what is happening to the airplane at these time intervals.

Answers

The altitude of the airplane after 30 minutes of descending is 0 feet, which means the airplane has landed.

What is the altitude?

The height of an object or point in relation to sea level or ground level.

Part A:

To create a table for the given equation, we substitute the given values of x in the equation and calculate the corresponding values of y:

x y = -128x + 3,840

0 3,840

5 3,200

8 2,624

10 2,304

30 0

Part B:

To find the altitude after 5 minutes, we substitute x = 5 in the given equation:

y = -128(5) + 3,840

y = 3,200

So the altitude of the airplane after 5 minutes of descending is 3,200 feet.

To find the altitude after 30 minutes, we substitute x = 30 in the given equation:

y = -128(30) + 3,840

y = 0

The altitude of the airplane is decreasing as time (x) increases, as given by the negative slope (-128) of the equation.

At 5 minutes, the airplane has descended to an altitude of 3,200 feet, which is still relatively high.

At 30 minutes, the altitude has decreased to 0, which means the airplane has landed on the ground.

Hence, the altitude of the airplane after 30 minutes of descending is 0 feet, which means the airplane has landed.

To learn more about the altitude visit:

https://brainly.com/question/1159693

#SPJ1

In the data set below, what are the lower quartile, the median, and the upper quartile?
1235588
lower quartile =


median = 5



upper quartile =

Answers

The lower quartile is 2, the median is 5 and the upper quartile is 8.

What are quartiles?

The values that divide a list of numerical data into three quarters are known as quartiles.

We are given a data set as 1, 2, 3, 5, 5, 8, 8

From this, we get the median as 5 as median is the middle number of the data set.

We know that lower quartile is the median of the lower half of the data.

So, lower quartile is 2.

Upper quartile is the median of the upper half of the data.

So, upper quartile is 8.

Hence, the lower quartile is 2, the median is 5 and the upper quartile is 8.

Learn more about quartiles from the given link

https://brainly.com/question/28169373

#SPJ1

Gary has 20 more candies than Mary. If Gary gives Mary 19 of his candies, Mary would have how many more candies than Gary?
Help!

Answers

Answer:

Mary would have 18 more candies than Gary

Step-by-step explanation:

HELPP please

Find the length of the unknown side of the triangle.
10 ft
5 ft
The length of the unknown side of the triangle is
(Simplify your answer. Type an exact answer, using radicals as needed.)

Answers

Answer:  [tex]5\sqrt{5} \ \text{ feet}[/tex]

Work Shown:

[tex]a^2 + b^2 = c^2\\\\c = \sqrt{a^2+b^2}\\\\c = \sqrt{5^2+10^2}\\\\c = \sqrt{125}\\\\c = \sqrt{25*5}\\\\c = \sqrt{25}*\sqrt{5}\\\\c = 5\sqrt{5}\\\\[/tex]

For more information, search out "pythagorean theorem".

PLEASE ANSWER QUESTION IMAGINE BELOW ill give you brainliest PLEASE ANSWER QUICKKK

Answers

After '2' hours, both Car A and Car B will be '20' miles from McDonald Middle School

What is a graph?

A diagram or pictorial representation that organises the depiction of data or values is known as a graph.

The relationships between two or more items are frequently represented by the points on a graph.

Given that, both the cars are traveling at a constant speed and given a graph showing the distance from The school in Y-axis and Time in X-axis

To find the point where the cars meet, We should look at the point of intersection of both the lines of Car A and Car B

We can see the point of intersection to be (2 hours, 20 miles)

i.e., After 2 hours, Both the cars are 20 miles from the school

To learn more about graphs, refer to the link below:

https://brainly.com/question/26865

#SPJ1

which of the following statements is true? multiple select question. two data sets could have different means but the same standard deviation. if two data sets have the same mean they must have the same standard deviation. two data sets could have the same mean but different standard deviations. if two data sets have different means they must have different standard deviations.

Answers

The correct statements are Two data sets could have different means but the same standard deviation, and could have the same mean but different standard deviations. If two data sets have different means they must have different standard deviations. Correct options are A, C , D.

The mean and standard deviation are both measures of the central tendency of a data set, but they capture different aspects of the distribution. The mean represents the average value of the data, while the standard deviation measures how spread out the data is around the mean.

It is possible for two data sets to have different means but the same standard deviation if one data set is more spread out than the other, but the values are symmetrically distributed around the mean. For example, the data sets {1, 2, 3, 7, 8, 9} and {0, 4, 5, 5, 5, 9} have different means (5 and 4.67, respectively) but the same standard deviation (3.16).

Similarly, two data sets could have the same mean but different standard deviations if one data set is more spread out than the other. For example, the data sets {1, 2, 3, 4, 5} and {1, 3, 3, 3, 5} have the same mean (3) but different standard deviations (1.41 and 1.26, respectively).

To learn more about data sets click on,

https://brainly.com/question/30543961

#SPJ4

Complete question is:

Which of the following statements is true?

multiple select question.

A. two data sets could have different means but the same standard deviation.

B. if two data sets have the same mean they must have the same standard deviation.

C.  two data sets could have the same mean but different standard deviations.

D. if two data sets have different means they must have different standard deviations.

The sum of the digits in a two-digit number is 14. If you reverse and double the original number, the sum is 222. Find the original number.

Answers

The  original two-digit number is 11 * 10 + 3 = 113.

How to find the original two digit number?

Let us correspond to the original two-digit number as "10x + y," with x and y showing the tens and units digits, respectively.

We know from the first piece of information:

x + y = 14

According to the second piece of information:

2(10x + y) + 10y + x = 222

When we simplify this equation, we get:

20x + 22y = 202

We get 10x + 11y = 101 by dividing both sides by 2.

We now have two equations with two variables that can be solved by substitution or elimination. For example, in the first equation, we can solve for x and then substitute into the second equation:

x = 14 - y\s10(14 - y) + 11y = 101

When we simplify this equation, we get: y = 3

Putting y = 3 back into the first equation yields: x = 11.

The  original two-digit number is 11 * 10 + 3 = 113.

To know more about variables visit:-

https://brainly.com/question/1511425

#SPJ1

What percentage of the marbles in the jar are white?
O 20%
O 40%
O 60%
O 80%

Answers

The percentage of white marbles on the jar is obtained dividing the number of white marbles by the total number of marbles.

How to calculate a percentage?

A percentage is calculated applying a proportion, dividing the number of total outcomes by the number of desired outcomes, and then multiplying by 100%.

The outcomes for this problem are given as follows:

Desired: number of white marbles.Total: total number of marbles.

Missing Information

The problem is incomplete, hence the standard procedure to obtain the percentage of white marbles was presented.

More can be learned about proportions at https://brainly.com/question/24372153

#SPJ1

you are flipping 100 coins, putting aside those that come up heads after each flip. how many flips do you expect to make before running out of coins to flip?

Answers

5050 flips expect to make before running out of coins .

Let's approach this problem using the concept of geometric distribution.

The probability of getting heads on any given coin flip is 1/2, assuming a fair coin.

So the probability of getting tails on a given flip is also 1/2.

The number of flips it takes to get the first head is a geometric distribution with a probability of success p = 1/2.

The expected number of flips until the first head appears is 1/p = 2 flips.

After the first head appears, there will be 99 coins left to flip.

The expected number of flips until the next head appears is still 2, since the probability of getting heads on any given flip is still 1/2.

So the expected number of flips until the second head appears (and the number of coins remaining drops to 98) is 2+1 = 3 flips.

Similarly, the expected number of flips until the third head appears (and the number of coins remaining drops to 97) is 2+1+1 = 4 flips.

We can generalize this pattern: after k heads have been obtained, the expected number of additional flips until the next head appears (and the number of coins remaining drops to 100-k) is k+1 flips.

Using this formula, we can calculate the expected number of flips to obtain all 100 heads:

E(number of flips) = (2 + 3 + 4 + ... + 101)

= (1 + 2 + 3 + ... + 100) + 100

= (100 x 101 / 2) + 100

= 5050

Therefore, we expect to make 5050 flips before running out of coins to flip and obtaining all 100 heads.

For similar questions on probability,

https://brainly.com/question/251701

#SPJ4.

Given: Sin Ø = 2/3 and Ø is in the second quadrant; evaluate the following expression. Sin2Ø

Please explain!!

Answers

Answer: The formula for sin2θ is sin2θ = 2sinθcosθ. We know that sinθ = 2/3. To evaluate cosθ, we use the fact that in the second quadrant, cosθ is negative. Therefore, cosθ = -sqrt(1-sin2θ). Plugging in the value of sinθ and simplifying, we get cosθ = -sqrt(7/9).

Finally, we can substitute the values of sinθ and cosθ into the formula for sin2θ to get: sin2θ = 2(2/3)(-sqrt(7/9)) = -4/3.

Last one I promise!


In science class, Brandi estimates the mass of a sample to be 107 grams. The actual mass of the sample is 104 grams. Find the percent error of Brandi’s estimate. Round your answer to the nearest tenth.

Answers

The percent error of Brandi’s estimate to the nearest tenth is equal to 2.9%.

What is percentage error?

In Mathematics, percentage error is also referred to as percent error and it can be defined as a measure of the extent to which an experimental value (numerical) differs from the actual (theoretical) numerical value.

Mathematically, percentage error can be calculated by using this expression;

Percent error = {experimental value - actual value}/{actual value} × 100

By substituting the given parameters into the percentage error formula, we have;

Percent error = {107 - 104}/{104} × 100

Percent error = 3/104 × 100

Percent error = 0.029 × 100

Percent error = 2.9%.

Learn more about percentage error here: https://brainly.com/question/26668346

#SPJ1

A mandatory competency test for high school sophomores has a normal distribution with a mean of 400 and a standard deviation of 100. The bottom 1. 5% of students must go to summer school. What is the minimum score you would need to stay out of this group?

Answers

A minimum score of 182 is required to stay out of the bottom 1.5% of students and avoid going to summer school.

To find the minimum score required to avoid going to summer school, we need to determine the score that separates the bottom 1.5% of students from the rest of the distribution. This score is also known as the cutoff or the critical value.

We know that the test scores have a normal distribution with a mean of 400 and a standard deviation of 100. To find the critical value, we can use the standard normal distribution, which has a mean of 0 and a standard deviation of 1. We can standardize the test scores using the z-score formula:

z = (x - mu) / sigma

where x is the test score, mu is the mean, and sigma is the standard deviation.

Substituting the given values, we get:

z = (x - 400) / 100

To find the z-score corresponding to the bottom 1.5% of the distribution, we can use a standard normal table or a calculator. The area to the left of this z-score is 0.015, which corresponds to a z-score of approximately -2.17.

Now we can solve for x, the minimum score required to stay out of the bottom 1.5%:

-2.17 = (x - 400) / 100

x = -2.17 * 100 + 400

x ≈ 182

To learn more about score click on,

https://brainly.com/question/6762121

#SPJ4

Please give a step to step explanation

Answers

Answer:

sin(35)

Step-by-step explanation:

Because of the co-function identity [tex]\cos(\theta)=\sin(90^\circ-\theta)[/tex], then [tex]\cos(55^\circ)=\sin(90^\circ-55^\circ)=\sin(35^\circ)[/tex].

Other Questions
PLEASE HELP ME!!!Why was Timbuktu revered as the "Pearl of America"? 13 4 73 efine a variable for the quantity that changes. Then, write an algebraic expression for the amount of etergent remaining in the container. Math symbols Relations Geometry Groups Trigonometry Statistics A, B & C form the vertices of a triangle. CAB = 90, ABC = 36 and AB = 8.6. Calculate the length of AC rounded to 3 SF. Scientists rope off two excavation sites. Site A is rectangular with a length of 60 meters and a width of 40 meters. Site B is similar in shape to Site A but has a length of 45 meters. How much rope is needed for both sites? Why does climate change pose a threat to human health?Question 23 options:It is causing more extreme weather events--including cyclones, typhoons, and hurricanes.Natural disasters such as drought and flooding are more destructive than ever beforeSea levels are rising which results in destruction to coastal habitatsAll of the above How does a health flexible spending arrangement (FSA) benefitemployees? Look back through the part of The Diary of a Young Girl that you have read already, and find an incident that you think is particularly meaningful. Create a "diary comic" illustrating the event or situation you chose. (Note that you don't have to draw Anne herself to represent the event as a comicyou can use objects to tell the story.) Refer to the rubric below to see how your work on this project will be graded. Amy says to find 50x20,I multiply 5x2 and then place the total number of zeros in both factors at the end.Do you agree?Explain Two urns contain white balls and yellow balls. The first urn contains 5 white balls and 4 yellow balls and the second urn contains 3 white balls and 2 yellow balls. A ball is drawn at random from each urn. What is the probability that both balls are white? Please Help Me!!!!!!! Which statement is true about light?A. Light always travels in a straight line.B. Light never travels in a straight lineC. Light is circular. write a program that finds word differences between two sentences. the input begins with the first sentence and the following input line is the second sentence. assume that the two sentences have the same number of words. the program displays word pairs that differ between the two sentences. one pair is displayed per line. ex: if the input is: smaller cars get better gas mileage tiny cars get great fuel economy then the output is: smaller tiny better great gas fuel mileage economy help with this geometry please!no fake answers :) Bias is a preference or prejudice a person has. Choose one of the four texts about women's suffrage and explain how the author's language shows a clear bias. The texts are...1. Wyoming Leads to Morals2. Town Where Women Vote Goes Under the Hammer3. Opinion on Women's Sufferage4. Ain't I a Women Jim vende perritos calientes a $2.95 cada uno y sndwiches de bistec a $9.95 cada uno en su carrito de comida. Durante un ajetreado festival al aire libre, vendi un total de 985 artculos por $7343,75. Cuntos sndwiches de bistec vendi? Consider the elements, listed, found in the human body. Which two are major components, making up at least 3% each of the human body? hydrogen n cobalt selenium O magnesium O carbon Which clause allows Congress to make all laws which are necessary and proper to carry out their powers laid out in the Constitution?A. Bill of RightsB. PreambleC. CommerceD. Elastic Dante uses ______ DSCP tags for QoS. major trends in today's dynamic world of work include increased emphasis on self-directed work groups and virtual teams, heightened global competition, innovative communication technologies, new work environments, and focus on Which organelle converts energy found in food into a form that cells can use?