# The relative frequency for a class is computed as: A. class width divided by class interval. B. class midpoint divided by the class frequency. C. class frequency divided by the interval. D. class frequency divided by the total frequency>

29,629 results, page 71

1. ### chemistry

a beam of blue light has a wavelength of 595 nm. What is the frequency Since this is not my area of expertise, I searched Google under the key words " wavelength frequency" to get these possible sources: http://zebu.uoregon.edu/~soper/Light/frequency.html http://www....
2. ### physics

Resonance of sound waves can be produced within an aluminum rod by holding the rod at its midpoint and stroking it with an alcohol-saturated paper towel. In this resonance mode, the middle of the rod is a node while the ends are antinodes; no other nodes or antinodes are ...
3. ### Honors Biology

We did a lab today in class where we observed the effects of osmosis. We had two gummy bears in each of three cups, where each cup was filled with either vinegar, syrup, or water. We took the masses of the gummy bears to see if they shrunk or if they got bigger. In a question ...

World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15m/s^2 . Part a)How much horizontal force F must a sprinter of mass 60kg exert on the starting blocks to produce this acceleration? express your ...
5. ### Science

Whenever Adrian plays his favorite video game he always A higher score if he plays well listen to music he wants to know if listening to music while playing video games affects other kids as well he decides to test all the boys in his class what should Adrian do to avoid ...
6. ### Stats

a. What are the values for TP, TN, FP, and FN for class value = 1? b. What are the sensitivity, specificity, and FPR for class value = 1? === Run information === Scheme: weka.classifiers.trees.J48 -C 0.25 -M 2 Relation: sattrn Instances: 4435 Attributes: 37 pixel1_1 pixel1_2 ...
7. ### English

I need to write a research paper on a topic that is relevant to, or is present in a book after I have read it. I wish to know any suggestions on good books to read on which an obvious research topic can be extracted from(preferably history related but not limited to. I just ...
8. ### Science

Which formula is used to calculate acceleration? Time divided by change in speed Time x change in speed Change in speed divided by time Change in speed x time Help ? Thanks, Anonymous
9. ### English (SCARLET LETTER)

We are reading the story, THE SCARLET LETTER, in class and I am confused on this question. From my understanding, Dimmesdale gets on scaffold and imagine what would be to tell the truth about his sin but then all of the sudden Hester and Pearl walks by. But I don't think ...
10. ### Math

A classroom of n = 10 children has a mean score of 17.200 on a measure of hyperactivity. One new child is added to the class, and the mean hyperactivity score for the resulting classroom including all the children is 18.000. Find the value of the new child's hyperactivity ...
11. ### Sandra

2/7 divided by 6 I know to invert the fraction, then what? Please help! 2/7 divided by 6/1 = 2/7 multiplied by 1/6 Multiply and then reduce. http://mathforum.org/library/drmath/sets/select/dm_divide_fract.html =)
12. ### Math

In a class of students, 80 spoke English, 110 spoke spanish, 100 spoke french, 50 spoke english & spanish, 30 spoke english & french, 20 spoke french & spanish, 10 spoke english & frnech, but no spanish. How many spoke spanish & french, but not english? The answer is 0. I was ...
13. ### SS8R: National Convention: The Female Voice Essay

I have this assignment for my Social Studies class about the National Convention. Well most of you know about the National Convention thing since you watch Republicans or Democratic. The essay is focusing on First Lady Michelle Obama and Ann Romney. They gave speeches at their...
14. ### Physics

A pan flute is based on standing wave resonance in a tube that is open where the musician blows and closed at the bottom end with bee’s wax. (a) Describe the standing wave pattern of air displacement in such a tube when a tone is played. (b) Determine the length of the tube ...
15. ### Maths

the average attendance of a class from Monday to Wednesday was 39 and that from Wednesday to saturday was 39.5 . what was the attendance on Wednesday, if the average attendance from Monday to Saturday was 40 ?
16. ### Calc 1

Consider the function below. f(x) = (x^2)/(x−9)^2 (a) Find the vertical and horizontal asymptotes. x=? y=? (b) Find the interval where the function is increasing. (Enter your answer using interval notation.) Find the interval where the function is decreasing. (Enter your...
17. ### Oop programming

Write a program that inputs (from the user) the number of hours worked and hourly pay rate for employees and outputs their total pay. The program should process an arbitrary number of employees; the user will terminate input by entering 0 for hours worked and rate of pay. Use ...
18. ### statistics

5.20 There are 100 males and 120 females in the graduating class of a local high school. Thirty-five percent of the graduating males are on school sports teams, as are 30% of the graduating females. A local businessperson is going to donate \$1000 to the favorite charity of a ...
19. ### Math

To study the efficiency of its new price-scanning equipment, a local supermarket monitored the amount of time its customers had to wait in line. The frequency distribution in the following table summarizes the findings. Find the standard deviation of the amount of time spent ...
20. ### Physics Class

A 0.140-kg baseball is pitched horizontally at 36.7 m/s. When a player hits the ball, it moves at the same speed, but in the opposite direction. If the bat and the ball are in contact for 0.450 ms, calculate the average force the bat exerts on the ball. Work Shown: F/\t0.450ms...
21. ### Psychology/Statistics

I have a quick question for you all. I have done a repeated measures ANOVA for hypothetical data in my Stats class. There were 5 subjects.. all subjects rated their mood on a cloudy day, then they all rated their mood on a sunny day. In sum.. they all underwent the same order ...
22. ### physics

Tweety Bird hops up and down at a frequency of 0.4 Hz on a power line at the midpoint between the poles, which are separated by 18 m. Assuming Tweety is exciting the fundamental standing wave, find the speed of transverse waves on the power line. (Hint: What is the wavelength ...
23. ### Math

Hi! Can someone check my answers? Thanks!! Directions: Tell whether the following questions are either permutations or combinations. 1.) Number of ways the Junior class can elect a committee of officers - President, Vice President, Secretary and Treasurer. (my answer: ...
24. ### Math

Hi! Can someone check my answers? Thanks!! Directions: Tell whether the following questions are either permutations or combinations. 1.) Number of ways the Junior class can elect a committee of officers - President, Vice President, Secretary and Treasurer. (my answer: ...

if the turns of the output gear over the turns of the input gear is equal to the number of teeth on the input gear over the number of teeth on the output gear, the input gear has 36 teeth and the output has 10, the output gear has turned twice as much as the input gear, how ...

Bob, thank you for the info. You always make everything sound so easy. Yu are so smart! And, I am not! If you will, please answer further. For example the first number is 1415926535, when it says make a graph fo the frequency of each digit. I look through the other 99 numbers ...
27. ### Math

Determine whether the following statement makes sense or does not make sense, and explain your reasoning: By modeling attitudes of college freshmen from 1969 through 2006, I can make precise predictions about the attitudes of the freshman class of 2020. A) This makes sense ...
28. ### English

What are you good at? I am good at driving my car. Why are you a good student? Because I listen to the lectures of teachers at class. Why are you a good daughter? Because I help Mother wash clothes with a washing machine. Why are you a good son? Because I help Father fixing ...
29. ### math

a baseball played 120 games during a season. The ratio of the number of games won to the total number of games played is 2/3. how many games did the team lose during the season? 120/1=2/3 360 divided by 2=180 or 120/x =2/3, 120 divided by 2 = 60
30. ### algebra

i forgot to post these! f(x)=9x+4 and listed in interval notation also: f(x) x2+14x+40 in interval notation and: 1/x^2+81 (interval notation) and: x+11/x^2-121 (interval notation) and: f(x+2) f(x)=6x^2-x+7 You have listed a lot of functions but have said nothing about what the...
31. ### Physics

Original Question: A block hangs in equilibrium from a vertical spring. When a second identical block is added, the original block sags by 5.00 cm. What is the oscillation frequency of the two block system? bobpursley s'ltn: F=kx = mg x=mg/k but for the second block we have x...
32. ### algbra help

(2u^3-13u^2-8u+7) divided by (u-7) 2u^2 u-7 !2u^3-13u^2-8u+7 2u^3-7u^2 then -6u u-7 -6u^2 -8u +7 -6u^2 +42u then -50 u-7 -50u +7 -50u + 350 then a remainder of -343 rfevgftvgtg i don't get algebra The sum of m and n, divided by the difference of m and n a party mix is made by ...
33. ### Language Arts

9. Choose the type of punctuation that is missing from the following sentence. My best friends new dog wont stop barking. (1 point) (x)apostrophe ()semicolon ()colon ()hyphen 10. Cant you just see the look on his face when he finds out about the party. (1 point) ()apostrophe (...
34. ### Science

Suppose that a sample of gas occupies 119 mL of volume at 25◦C and a pressure of 221 torr. What would be the volume if the pressure were changed to 647 torr at 25◦C? This is boyle's law right? p1v1 = p2v2 Since I'm looking for v2 I rearranged it to be v2 = p1v1 / ...
35. ### Physics Questions Help Please!

1) The lowest tone to resonate in an open pipe of length L is 1600 Hz. What is the frequency of the lowest tone that will resonate in a closed pipe of length 2L? a) 100 Hz b) 1.60 Hz c) 200 Hz d) 0.800 kHz 2) Which of the following does not increase as a sound becomes louder? ...
36. ### English-College

For my college english class we have to write a highly technical document, semi technical document, and non technical document. All them have to be on the same topic and a 1/2 page each. I was wondering if you had any ideas on what I can write on and what these documents ...
37. ### MATH CLASS 6th grade

The manager of the ice cream shop noticed that 90% of all club members brought along a family member who spent an average of \$18 in the shop. The tax on their bill was 5.5%. a. What was the total amount spent by the family members in one year? b. What would each family member ...

1) Sitting in class wearing ear buds during a lecture is effective listening. TRUE OR FALSE ~ (my answer is FALSE) 2) Defense mechanisms should be used as often as possible to deal with uncomfortable emotions. TRUE OR FALSE ~ (my answer is FALSE) 3) Daily decision are often ...
39. ### Relative Extrema: AP Calculus

Consider the function f(x)= (3/4)x^4-x^3-3x^2+6x Find the relative extrema for f(x); be sure to label each as a maximum or minimum. You do not need to find function values; just find the x-values. Determine the interval(s) where f(x) is increasing (if any) and the interval(s) ...
40. ### math :)

Jane spins the spinner 10 times in succession.Seven times the spinner lands on an even number. What is the relative frequency that the spinner will land on an odd number? is this 3/10?
41. ### statistics

Table: Like Dogs Yes No Like cats Yes 194 21 No 110 10 For parts a-d give a fraction and % for answer. A.What % of all students like dogs? B. What % of students in the entire class like dogs and cats? C. What % of students who like cats like dogs? D. What % of students who do ...
42. ### computer progaming

can anyone give me infomoration on Novell Enterpise open server im helping my dad with his online class homework and i was wondering if i can get help? Ah...the days of homework have changed. It used to be that parents had to help their kids with homework. Now it's kids ...
43. ### Medical Billing

Hi. I am working on my Final Project for my medical billing class. I am filling out a CMS-1500 form. The teacher has instructed us to code ONLY the diagnosis code CATEGORIES, NOT the ICD-9 code. I am confused about what the code CATEGORY is? We are coding HIV, AIDS, and Kaposi...
44. ### physics 2

A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of 1.8 x 10-...
45. ### Maths

In a class of 45 students, 24 do arts, 20 to chemistry and 22 to biology. All the students do at least one of 3 subjects.3 do all the 3 subjects while 7 do art and biology, 6 do art and chemistry but not biology. How many do biology only, chemistry only or art only

Bizzy, I have taken this paragraph and rewritten it to let you see what I meant by being less wordy and better organized. My study of Human Development will be useful in working with children. The course,Human Development 307I Childhood through Adolescents, explained the ...
47. ### Math

number of students in a class = 36 number playing cricket = 16 number playing football = 25 number playing both cricket and football = x write an equation for x how many students play both football and cricket

A spaceship lands on a new planet. the crew decides to measure the speed of sound in the planets atmosphere. taking a tube with a length of 50 cm, they find that one resonant frequency occurs at 2,520 Hz, and the next resonant frequency at 2,940 hz. what is the speed of the ...
49. ### physics

A 2.0 kg block is attached to the end of a spring with a spring constant of 350 N/m and forced to oscillate by an applied force F = (15 N)sin(ωt),where ω = 35 rad/s. The damping constant is b = 15 kg/s. At t = 0,the block is at rest with the spring at its rest length...
50. ### Maths

17 the larger of two number is divided by the smaller,the quotient and the reminder are 2 each. 17 5times the smaller number is divided by the larger,the quotient and the reminder are still 2 each. Find the two number.
51. ### Computer Science

Write a class “Program1” that has the method “allLess” (below) that receives two arrays of integers and returns true if each element in the first array is less than the element at the same index in the second array. For example, given the arrays {42, 2, 30} and {50, 6...
52. ### BIOLOGY - LAB

What is Confidence Interval? Is it better to have a large Confidence Interval or a small Confidence Interval? Briefly explain.
53. ### Statistics

This is a question I have to answer for a University of Phoenix class, If any one could help and explain to me (in a stistics for dummies explanation:)I would appreciate it. Here goes: Six months after a divorce, the former wife, and husband each take a test that measures ...
54. ### physics....again

A typical light bulb is 2% efficient. It means that only 2% of electric energy is converted into visible electromagnetic radiation and 98% is converted into ultraviolet radiation known as heat. Suppose a 100W bulb is turned on for 10h. a. how much energy is used by the lamp? ...
55. ### Math

Hi, my name is Jane:). Math is my worst subject ever, so it surprised me how I'm in the advanced class! The teacher doesn't exactly explain things well and I'm not easily understanding the lessons. He told me if I don't turn in this packet we'll have detention. I didn't think ...
56. ### AP Physics

Hi, please help me solve these questions for my class. I have so much homework A car traveling at 17 m/s accelerates at 3.3 m/s2 for 16 seconds. To the nearest meter how far does it travel? To the nearest tenth of a m/s, what is the final velocity of the car in the previous ...
57. ### SCIENCE

Which of the following tissues would send a message to the brain indicating that someone has touched something hot? A. Epithelial tissue B. Nervous tissue C. Muscle tissue D. Connective tissue i think its B Which of the following describes the classification of humans? A. The ...
58. ### Pre-Cal: Domain

[Note: I really need help on these Domain questions. I've been struggling with this all day] -Consider the following: f(x)= 5/x , g(x)= 7/(x+7) -Find the solutions to the following: 1). (f+g)(x) 2). Domain of (f+g)(x) [Use interval notation too] 3). (f-g)(x) 4). Domain of (f-g...
59. ### PHYSICS

A tuning fork of frequency 558 Hz is placed near the top of the pipe shown in the Figure. The water level is lowered so that the length L slowly increases from an initial value of 20.0 cm. Determine the next two values of L that correspond to resonant modes. (Assume that the ...
60. ### solar science physics

Which of the following statements is NOT true about solar inverters? A stand-alone inverter is supposed to work as an AC voltage source for a specified range of AC loads. An ideal grid-tied inverter has its operational voltage and frequency synchronized with those of the grid...
61. ### Math

A store has apples on sale for three dollars for 2 pounds. How many pounds of apples can you buy for nine dollars. If an apple is approximately 5 ounces how many apples can you buy for nine dollars? Explain your reasoning So for the first question I got 6 apples because I ...
62. ### Java Programming

Hey! Thanks for checking my question out! ____ 10. If x is a sorted array of int values, which of the following shows a call to a method of the Arrays class that will determine if the value 7 exists in the array? (1 point) a) int loc = java.util.Arrays.search(x, 7); b) int loc...
63. ### Science - Chromatography

I performed a TLC of plant pigments in my lab class with a solvent of petroleum ether/ acetone (7:3) and used a silica gel plate. It is expected that the most polar pigments (chlorophyll) will be located near the bottom and the carotenoids near top. In my experiment, it was ...
64. ### Chemistry

a piece of metal is heated by placing it in hot oil. it is removed from the hot oil and placed into a calorimeter of cold water. the water heats up due to the transfer of heat from the metal. what happens to the temperature of the calorimeter? how is the heat that causes the ...
65. ### math

An art projector takes a 5 x 5" picture and enlarges it 14 times. What is the largest size, height and width, it can make? Have tried a formula of 5" x 14= 70, so 5 x 5" = 70 x 70 = 4900, 4900 divided by the side, 70, = finished size of 70 x 70" ?
66. ### math

a rectangular pen is divided into 6 rectangular strips by fences running parallel to the width of the pen. if 420m of fencing are available, determine the dimensions that give the maximum area possible.
67. ### English singulars and plurals

Question 1 A count noun describes something that what? cannot be divided into distinct units can be divided into distinct units has no plural has no singular Question 2 A noncount noun describes something that what? can be divided into distinct units has no plural uses a ...
68. ### Physics

A student has a small battery-powered alarm buzzer. The student throws the buzzer toward a stationary wall (possibly due to frustration following a physics midterm examination). The buzzer emits sound with a frequency of 74 Hz, and the wall reflects the sound. If the buzzer is...
69. ### mathematics

If 3/4 of a class is absent and 2/3 of those present leave the room, what fraction of the original class remains in the room? my book says.. if 3/4 are absent, 1/4 are present hows that so? then it says if 2/3 of the 1/4 present , 1/3 of the 1/4 remain leave 1/3x1/4 =1/12 I ...
70. ### statistics

A group of adults of 200 aged 21 to 50 were selected from those entering Fit Right Health stores in Washington state, and were randomly divided into two groups. One group was given an herb and the othe placebo. After 6 months, the the number of respiratory tract infections in ...
71. ### History

Which best describes the causes of the French Revolution? (Select all that apply.) french aristocrats sought to relinquish power of the papacy in France in order to gain new lands and titles people in France, especially poor and lower classes, had been starving for months, ...
72. ### U.S. History

I have a question for someone. I need some help in getting started on this paper for my History class. I need to assume the role of a Radical Republican Senator and argue the Radical Republican position of Reconstruction in the first part of my paper and in the second part I ...
73. ### math

how do i do a frequency table
74. ### math

how to do frequency tables 3-1
75. ### Trigonometry

what is the frequency of y=tan(Pi/3 x)?
76. ### Science

What is a frequency of a wavelength?
77. ### Chemistry

Are the units for frequency Nu or Hz????????!
78. ### Computers

1) What is the purpose of computer simulations? A. to provide virtual hands-on experience when actual hands-on experience is not possible*** B. to provide an online version of a printed text C. to provide clip art about the subject being studied D. to provide a real life hands...
79. ### Grammar (Ms. Sue)

The following sentences are written in the present tense. Rewrite each sentence in each of the other five tenses. 1). I collect. 2). You split. 3). They teach. 4). We give. 5). It remains. My answers: 1). Past: I collected Vanessa from her Seminary class. Future: I will ...
80. ### Math

Your a 7th grade math teacher and you want to create an experiment for your class with red, yellow and purple marbles in a bag. You want to theoretical probability of drawing a red marble to be 1/2, the theoretical probability of drawing a yellow to be 1/2, and the theoretical...

Let f be the frequency, v wav the speed, and T the period of a sinusoidal traveling wave. The correct relationship is: a)f=1/T b)f=vwav + T c)f=vwavT d)f=vwav/T e)f=T/vwav My thoughts: Since frequency is equal to T=1/f so f=1/T. Vwav is connected to f by the equation v=lambda...
82. ### chemistry

The following is a question on a lab I do not understand and need help with (thank you). Topic: Hardy-Weinberg In this Scenario, we will assign initial genotypic frequencies. 1. Record your class population's data in Table 3A. 2. Record your assigned genotype in Table 3B. Find...
83. ### chemistry

The following is a question on a lab I do not understand and need help with (thank you). Topic: Hardy-Weinberg In this Scenario, we will assign initial genotypic frequencies. 1. Record your class population's data in Table 3A. 2. Record your assigned genotype in Table 3B. Find...
84. ### chemistry

The following is a question on a lab I do not understand and need help with (thank you). Topic: Hardy-Weinberg In this Scenario, we will assign initial genotypic frequencies. 1. Record your class population's data in Table 3A. 2. Record your assigned genotype in Table 3B. Find...
85. ### physical

You are playing a note that has a fundamental frequency of 466.16 Hz on a guitar string of length 59.9 cm. At the same time, your friend plays a fundamental note on an open organ pipe, and 4.0 beats per seconds are heard. The mass per unit length of the string is 1.85 g/m. ...
86. ### Please check my Calculus

1. Find all points of inflection: f(x)=1/12x^4-2x^2+15 A. (2, 0) B. (2, 0), (-2, 0) C. (0, 15) D. (2, 25/3), (-2, 25/3) E. none of these I got D. I found the second derivative and equaled it to 0 and solved for x. I plugged the x values in to get my points. 2. Find the ...
87. ### English

Hello, I am french and I have some english homework for tomorrow, Can you correct my English please ? Thank ou During the Victorian era, the middle class growth quickly. Moreover, the social divide was very important ( To illustrate this gap, the underworld was characterized ...
88. ### Technology

Calculate the force required to move a small pistons that has an area of 2m2,if the force of a large piston is 20n with an as area of 4m2.Hint use a formulae :a frorce of small piston divided by an area of small piston equal to force of large pistone divided by area of large ...
89. ### Science ?

I was making some instant coffee and it had clumped up...I was heating up some water to go and make coffee... Then I just looked in the container and started to shake the container with the lid off a bit..that is when I knoticed the larger clumps of instant coffe mix moving to...
90. ### math

Two rulers are the same length. Ruler A is divided into 357 units while ruler B is divided into 255 units The rulers are placed side by side with the 0 marks lined up and the 375th mark of ruler A aligned with the 255th mark of ruler B. How many total places will the marks on ...
91. ### math

in a class of 40 boys 18 passed business mathematics, 19 passed accounts, 10 passed economics, 6 passed accounts only, 5 passed business mathematics and accounts only, 2 passed accounts and economics only. how many passed in all three papers
92. ### Maths

In a class of 40 boys, 18 passed Business Mathematics, 19 passed Accounts, 10 passed Economics, 6 passed Accounts only, 5 passed Business Mathematics and Accounts only, 2 Passed Accounts and Economics only. How many passed in all three papers.
93. ### Maths

in a class of 40 boys 18 passed business mathematics, 19 passed accounts, 10 passed economics, 6 passed accounts only, 5 passed business mathematics and accounts only, 2 passed accounts and economics only. how many passed in all three papers
94. ### math

3. In a class of 40 boys, 18 passed Business Mathematics, 19 passed Accounts, 10 passed Economics, 6 passed Accounts only, 5 passed Business Mathematics and Accounts only, 2 Passed Accounts and Economics only. How many passed in all three papers.
95. ### Physics

A steel tube, which is closed at both ends, is filled with air. The air in the tube is vibrating at a frequency of 200·Hz. Use 340·m/s for the speed of sound in air. (a) What is the wavelength of the sound waves in the tube? m. (b) If the 200·Hz vibration respresents the ...
96. ### math

Ted made a scale model of a submarine for his science class. a. What is the volume of Ted’s model? b. If 1 inch in the model represents 20 feet in the actual submarine, what is the volume of the actual submarine? front round is 3 inch radius/length 3 inch cylinder is length ...
97. ### Chemistry (Electrons in Atoms)

True or False. 1)Electrons give off light as they drop to lower energy levels. 2)Electrons travel around the nucleus as waves. 3)A photon of low frequency light has more energy than a photon of high frequency light. 4)Orbitals with equal energy levels each contain one electron...